1 00:00:14,440 --> 00:00:18,550 okay we'll take a look at this furnace 2 00:00:18,550 --> 00:00:18,560 okay we'll take a look at this furnace 3 00:00:18,560 --> 00:00:21,370 okay we'll take a look at this furnace for checking the carbon content and you 4 00:00:21,370 --> 00:00:21,380 for checking the carbon content and you 5 00:00:21,380 --> 00:00:24,670 for checking the carbon content and you see this is just an ordinary induction 6 00:00:24,670 --> 00:00:24,680 see this is just an ordinary induction 7 00:00:24,680 --> 00:00:28,300 see this is just an ordinary induction coil put the stuff in there heat it up 8 00:00:28,300 --> 00:00:28,310 coil put the stuff in there heat it up 9 00:00:28,310 --> 00:00:31,750 coil put the stuff in there heat it up to about 2600 degrees with oxygen and it 10 00:00:31,750 --> 00:00:31,760 to about 2600 degrees with oxygen and it 11 00:00:31,760 --> 00:00:35,880 to about 2600 degrees with oxygen and it will burn and then you can proceed now 12 00:00:35,880 --> 00:00:35,890 will burn and then you can proceed now 13 00:00:35,890 --> 00:00:38,619 will burn and then you can proceed now on the resistance high temperature 14 00:00:38,619 --> 00:00:38,629 on the resistance high temperature 15 00:00:38,629 --> 00:00:40,270 on the resistance high temperature furnace which is another one that's used 16 00:00:40,270 --> 00:00:40,280 furnace which is another one that's used 17 00:00:40,280 --> 00:00:44,560 furnace which is another one that's used you have carbide or moly die silicide 18 00:00:44,560 --> 00:00:44,570 you have carbide or moly die silicide 19 00:00:44,570 --> 00:00:50,800 you have carbide or moly die silicide elements then the accelerators use you 20 00:00:50,800 --> 00:00:50,810 elements then the accelerators use you 21 00:00:50,810 --> 00:00:52,930 elements then the accelerators use you have a catalysts in it and then you can 22 00:00:52,930 --> 00:00:52,940 have a catalysts in it and then you can 23 00:00:52,940 --> 00:00:56,830 have a catalysts in it and then you can detect the separated gases by one of the 24 00:00:56,830 --> 00:00:56,840 detect the separated gases by one of the 25 00:00:56,840 --> 00:00:58,990 detect the separated gases by one of the two detection systems that we had 26 00:00:58,990 --> 00:00:59,000 two detection systems that we had 27 00:00:59,000 --> 00:01:00,880 two detection systems that we had previously mentioned that provide a 28 00:01:00,880 --> 00:01:00,890 previously mentioned that provide a 29 00:01:00,890 --> 00:01:04,229 previously mentioned that provide a specific and consistent signal and 30 00:01:04,229 --> 00:01:04,239 specific and consistent signal and 31 00:01:04,239 --> 00:01:07,060 specific and consistent signal and process it electronically it's a lot of 32 00:01:07,060 --> 00:01:07,070 process it electronically it's a lot of 33 00:01:07,070 --> 00:01:09,609 process it electronically it's a lot of a lot of electronic stuff but you can 34 00:01:09,609 --> 00:01:09,619 a lot of electronic stuff but you can 35 00:01:09,619 --> 00:01:13,240 a lot of electronic stuff but you can come up with an answer on the infrared 36 00:01:13,240 --> 00:01:13,250 come up with an answer on the infrared 37 00:01:13,250 --> 00:01:18,730 come up with an answer on the infrared detection you can apply it on the basis 38 00:01:18,730 --> 00:01:18,740 detection you can apply it on the basis 39 00:01:18,740 --> 00:01:21,120 detection you can apply it on the basis that various gases can absorb energy 40 00:01:21,120 --> 00:01:21,130 that various gases can absorb energy 41 00:01:21,130 --> 00:01:23,740 that various gases can absorb energy within a specific wavelength of the 42 00:01:23,740 --> 00:01:23,750 within a specific wavelength of the 43 00:01:23,750 --> 00:01:26,850 within a specific wavelength of the infrared spectrum now this is similar to 44 00:01:26,850 --> 00:01:26,860 infrared spectrum now this is similar to 45 00:01:26,860 --> 00:01:31,649 infrared spectrum now this is similar to a scanning electron microscope analysis 46 00:01:31,649 --> 00:01:31,659 a scanning electron microscope analysis 47 00:01:31,659 --> 00:01:34,060 a scanning electron microscope analysis when you analyze something and you 48 00:01:34,060 --> 00:01:34,070 when you analyze something and you 49 00:01:34,070 --> 00:01:35,830 when you analyze something and you actually have a wavelength for a given 50 00:01:35,830 --> 00:01:35,840 actually have a wavelength for a given 51 00:01:35,840 --> 00:01:38,620 actually have a wavelength for a given element so that you can determine how 52 00:01:38,620 --> 00:01:38,630 element so that you can determine how 53 00:01:38,630 --> 00:01:42,399 element so that you can determine how much of each one you have in it there on 54 00:01:42,399 --> 00:01:42,409 much of each one you have in it there on 55 00:01:42,409 --> 00:01:45,070 much of each one you have in it there on the thermal conductive detection system 56 00:01:45,070 --> 00:01:45,080 the thermal conductive detection system 57 00:01:45,080 --> 00:01:47,230 the thermal conductive detection system it's based on the principle that each 58 00:01:47,230 --> 00:01:47,240 it's based on the principle that each 59 00:01:47,240 --> 00:01:49,810 it's based on the principle that each gas has a distinct capability of 60 00:01:49,810 --> 00:01:49,820 gas has a distinct capability of 61 00:01:49,820 --> 00:01:52,780 gas has a distinct capability of carrying heat from the body so you can 62 00:01:52,780 --> 00:01:52,790 carrying heat from the body so you can 63 00:01:52,790 --> 00:01:56,499 carrying heat from the body so you can take the carbon dioxide and determine 64 00:01:56,499 --> 00:01:56,509 take the carbon dioxide and determine 65 00:01:56,509 --> 00:01:58,899 take the carbon dioxide and determine the thermal conductive chains generated 66 00:01:58,899 --> 00:01:58,909 the thermal conductive chains generated 67 00:01:58,909 --> 00:02:02,050 the thermal conductive chains generated by it and come up with the amount of 68 00:02:02,050 --> 00:02:02,060 by it and come up with the amount of 69 00:02:02,060 --> 00:02:05,609 by it and come up with the amount of carbon that was expected and in any 70 00:02:05,609 --> 00:02:05,619 carbon that was expected and in any 71 00:02:05,619 --> 00:02:09,550 carbon that was expected and in any sense you can determine then the total 72 00:02:09,550 --> 00:02:09,560 sense you can determine then the total 73 00:02:09,560 --> 00:02:11,350 sense you can determine then the total amount of carbon that was in the sample 74 00:02:11,350 --> 00:02:11,360 amount of carbon that was in the sample 75 00:02:11,360 --> 00:02:14,970 amount of carbon that was in the sample and get it a an accurate reading on it 76 00:02:14,970 --> 00:02:14,980 and get it a an accurate reading on it 77 00:02:14,980 --> 00:02:17,920 and get it a an accurate reading on it now let's go to thread inspection and 78 00:02:17,920 --> 00:02:17,930 now let's go to thread inspection and 79 00:02:17,930 --> 00:02:21,940 now let's go to thread inspection and this one is something that people talk 80 00:02:21,940 --> 00:02:21,950 this one is something that people talk 81 00:02:21,950 --> 00:02:25,780 this one is something that people talk about a lot but kind of like politics 82 00:02:25,780 --> 00:02:25,790 about a lot but kind of like politics 83 00:02:25,790 --> 00:02:27,340 about a lot but kind of like politics they talk about it a lot but 84 00:02:27,340 --> 00:02:27,350 they talk about it a lot but 85 00:02:27,350 --> 00:02:30,790 they talk about it a lot but but it's not a lot done so I found out 86 00:02:30,790 --> 00:02:30,800 but it's not a lot done so I found out 87 00:02:30,800 --> 00:02:34,330 but it's not a lot done so I found out when I went to checking into it the 88 00:02:34,330 --> 00:02:34,340 when I went to checking into it the 89 00:02:34,340 --> 00:02:38,050 when I went to checking into it the common methods of inspection that are 90 00:02:38,050 --> 00:02:38,060 common methods of inspection that are 91 00:02:38,060 --> 00:02:39,880 common methods of inspection that are given once again in this Mel handbook 92 00:02:39,880 --> 00:02:39,890 given once again in this Mel handbook 93 00:02:39,890 --> 00:02:44,530 given once again in this Mel handbook age 28 and are the system's 21 22 and 23 94 00:02:44,530 --> 00:02:44,540 age 28 and are the system's 21 22 and 23 95 00:02:44,540 --> 00:02:48,990 age 28 and are the system's 21 22 and 23 they're also covered in antsy B 1.3 em 96 00:02:48,990 --> 00:02:49,000 they're also covered in antsy B 1.3 em 97 00:02:49,000 --> 00:02:52,480 they're also covered in antsy B 1.3 em now in general the system 21 requires 98 00:02:52,480 --> 00:02:52,490 now in general the system 21 requires 99 00:02:52,490 --> 00:02:56,350 now in general the system 21 requires the least amount of inspection system 22 100 00:02:56,350 --> 00:02:56,360 the least amount of inspection system 22 101 00:02:56,360 --> 00:02:58,480 the least amount of inspection system 22 is an intermediate amount and 23 is the 102 00:02:58,480 --> 00:02:58,490 is an intermediate amount and 23 is the 103 00:02:58,490 --> 00:03:04,450 is an intermediate amount and 23 is the most stringent and so our each one of 104 00:03:04,450 --> 00:03:04,460 most stringent and so our each one of 105 00:03:04,460 --> 00:03:06,220 most stringent and so our each one of these is practically a separate document 106 00:03:06,220 --> 00:03:06,230 these is practically a separate document 107 00:03:06,230 --> 00:03:08,110 these is practically a separate document so I'll just try to summarize them a 108 00:03:08,110 --> 00:03:08,120 so I'll just try to summarize them a 109 00:03:08,120 --> 00:03:10,330 so I'll just try to summarize them a little bit but one of the things we 110 00:03:10,330 --> 00:03:10,340 little bit but one of the things we 111 00:03:10,340 --> 00:03:15,030 little bit but one of the things we found out is that most people just use 112 00:03:15,030 --> 00:03:15,040 found out is that most people just use 113 00:03:15,040 --> 00:03:20,260 found out is that most people just use system 21 and on system 21 all you're 114 00:03:20,260 --> 00:03:20,270 system 21 and on system 21 all you're 115 00:03:20,270 --> 00:03:25,200 system 21 and on system 21 all you're doing is checking the OD your ID and 116 00:03:25,200 --> 00:03:25,210 doing is checking the OD your ID and 117 00:03:25,210 --> 00:03:29,980 doing is checking the OD your ID and using a go/no-go gage anyway some of the 118 00:03:29,980 --> 00:03:29,990 using a go/no-go gage anyway some of the 119 00:03:29,990 --> 00:03:32,380 using a go/no-go gage anyway some of the things that you are looking for on 120 00:03:32,380 --> 00:03:32,390 things that you are looking for on 121 00:03:32,390 --> 00:03:34,570 things that you are looking for on threads now this was up earlier in the 122 00:03:34,570 --> 00:03:34,580 threads now this was up earlier in the 123 00:03:34,580 --> 00:03:36,460 threads now this was up earlier in the course but nevertheless just to go 124 00:03:36,460 --> 00:03:36,470 course but nevertheless just to go 125 00:03:36,470 --> 00:03:37,630 course but nevertheless just to go through it again to familiarize 126 00:03:37,630 --> 00:03:37,640 through it again to familiarize 127 00:03:37,640 --> 00:03:41,320 through it again to familiarize ourselves with it here is the the pitch 128 00:03:41,320 --> 00:03:41,330 ourselves with it here is the the pitch 129 00:03:41,330 --> 00:03:42,730 ourselves with it here is the the pitch of the threads the distance between 130 00:03:42,730 --> 00:03:42,740 of the threads the distance between 131 00:03:42,740 --> 00:03:44,710 of the threads the distance between threads here is that angle which is 132 00:03:44,710 --> 00:03:44,720 threads here is that angle which is 133 00:03:44,720 --> 00:03:47,680 threads here is that angle which is usually this alpha 1 alpha 2 the sum of 134 00:03:47,680 --> 00:03:47,690 usually this alpha 1 alpha 2 the sum of 135 00:03:47,690 --> 00:03:50,110 usually this alpha 1 alpha 2 the sum of those normally is 60 degrees on threads 136 00:03:50,110 --> 00:03:50,120 those normally is 60 degrees on threads 137 00:03:50,120 --> 00:03:53,650 those normally is 60 degrees on threads here is your banish cone where you run 138 00:03:53,650 --> 00:03:53,660 here is your banish cone where you run 139 00:03:53,660 --> 00:03:59,500 here is your banish cone where you run out your threads and here is the major 140 00:03:59,500 --> 00:03:59,510 out your threads and here is the major 141 00:03:59,510 --> 00:04:02,440 out your threads and here is the major diameter which is the outside rest of 142 00:04:02,440 --> 00:04:02,450 diameter which is the outside rest of 143 00:04:02,450 --> 00:04:05,470 diameter which is the outside rest of the threads the minor diameter which is 144 00:04:05,470 --> 00:04:05,480 the threads the minor diameter which is 145 00:04:05,480 --> 00:04:08,620 the threads the minor diameter which is from the diameter at the root and then 146 00:04:08,620 --> 00:04:08,630 from the diameter at the root and then 147 00:04:08,630 --> 00:04:10,630 from the diameter at the root and then the pitch diameter which is a very 148 00:04:10,630 --> 00:04:10,640 the pitch diameter which is a very 149 00:04:10,640 --> 00:04:12,010 the pitch diameter which is a very important thing and that's of course 150 00:04:12,010 --> 00:04:12,020 important thing and that's of course 151 00:04:12,020 --> 00:04:14,410 important thing and that's of course where if you mated the threads up 152 00:04:14,410 --> 00:04:14,420 where if you mated the threads up 153 00:04:14,420 --> 00:04:17,220 where if you mated the threads up perfectly you would have the same 154 00:04:17,220 --> 00:04:17,230 perfectly you would have the same 155 00:04:17,230 --> 00:04:19,960 perfectly you would have the same thickness through the cross-section of 156 00:04:19,960 --> 00:04:19,970 thickness through the cross-section of 157 00:04:19,970 --> 00:04:23,620 thickness through the cross-section of the thread as you do in here as you do 158 00:04:23,620 --> 00:04:23,630 the thread as you do in here as you do 159 00:04:23,630 --> 00:04:29,140 the thread as you do in here as you do in the mating thread here and here is 160 00:04:29,140 --> 00:04:29,150 in the mating thread here and here is 161 00:04:29,150 --> 00:04:31,420 in the mating thread here and here is here's another one that I wanted to show 162 00:04:31,420 --> 00:04:31,430 here's another one that I wanted to show 163 00:04:31,430 --> 00:04:36,010 here's another one that I wanted to show you for this reason this is kind of a 164 00:04:36,010 --> 00:04:36,020 you for this reason this is kind of a 165 00:04:36,020 --> 00:04:37,690 you for this reason this is kind of a close-up that shows the difference 166 00:04:37,690 --> 00:04:37,700 close-up that shows the difference 167 00:04:37,700 --> 00:04:40,920 close-up that shows the difference between having an unrated through 168 00:04:40,920 --> 00:04:40,930 between having an unrated through 169 00:04:40,930 --> 00:04:44,640 between having an unrated through and having a radius thread the other 170 00:04:44,640 --> 00:04:44,650 and having a radius thread the other 171 00:04:44,650 --> 00:04:48,540 and having a radius thread the other thing is this circle here represents the 172 00:04:48,540 --> 00:04:48,550 thing is this circle here represents the 173 00:04:48,550 --> 00:04:52,620 thing is this circle here represents the pins that are used for measuring the 174 00:04:52,620 --> 00:04:52,630 pins that are used for measuring the 175 00:04:52,630 --> 00:04:55,290 pins that are used for measuring the pitch diameter there's a method to call 176 00:04:55,290 --> 00:04:55,300 pitch diameter there's a method to call 177 00:04:55,300 --> 00:04:57,780 pitch diameter there's a method to call the three pin method that they can put 178 00:04:57,780 --> 00:04:57,790 the three pin method that they can put 179 00:04:57,790 --> 00:05:00,210 the three pin method that they can put the pins a two on one side one on the 180 00:05:00,210 --> 00:05:00,220 the pins a two on one side one on the 181 00:05:00,220 --> 00:05:02,129 the pins a two on one side one on the other side but flat plates across 182 00:05:02,129 --> 00:05:02,139 other side but flat plates across 183 00:05:02,139 --> 00:05:04,350 other side but flat plates across measure it then you go to a table and 184 00:05:04,350 --> 00:05:04,360 measure it then you go to a table and 185 00:05:04,360 --> 00:05:07,469 measure it then you go to a table and you can find out from this table based 186 00:05:07,469 --> 00:05:07,479 you can find out from this table based 187 00:05:07,479 --> 00:05:09,659 you can find out from this table based on the size thread you're using the 188 00:05:09,659 --> 00:05:09,669 on the size thread you're using the 189 00:05:09,669 --> 00:05:11,760 on the size thread you're using the diameter of these pins you can come up 190 00:05:11,760 --> 00:05:11,770 diameter of these pins you can come up 191 00:05:11,770 --> 00:05:15,240 diameter of these pins you can come up with an accurate reading of the pitch 192 00:05:15,240 --> 00:05:15,250 with an accurate reading of the pitch 193 00:05:15,250 --> 00:05:21,629 with an accurate reading of the pitch diameter of the thread now for external 194 00:05:21,629 --> 00:05:21,639 diameter of the thread now for external 195 00:05:21,639 --> 00:05:27,800 diameter of the thread now for external threads system 21 just includes go/no-go 196 00:05:27,800 --> 00:05:27,810 threads system 21 just includes go/no-go 197 00:05:27,810 --> 00:05:31,140 threads system 21 just includes go/no-go diameter and the major diameter that's 198 00:05:31,140 --> 00:05:31,150 diameter and the major diameter that's 199 00:05:31,150 --> 00:05:34,409 diameter and the major diameter that's all that they do and you can either 200 00:05:34,409 --> 00:05:34,419 all that they do and you can either 201 00:05:34,419 --> 00:05:37,080 all that they do and you can either measure this you usually measure it with 202 00:05:37,080 --> 00:05:37,090 measure this you usually measure it with 203 00:05:37,090 --> 00:05:39,420 measure this you usually measure it with what the color ring gauge which is 204 00:05:39,420 --> 00:05:39,430 what the color ring gauge which is 205 00:05:39,430 --> 00:05:43,379 what the color ring gauge which is nothing more than a calibrated thread in 206 00:05:43,379 --> 00:05:43,389 nothing more than a calibrated thread in 207 00:05:43,389 --> 00:05:46,710 nothing more than a calibrated thread in a ring that to replace replace what you 208 00:05:46,710 --> 00:05:46,720 a ring that to replace replace what you 209 00:05:46,720 --> 00:05:48,690 a ring that to replace replace what you would normally use as a nut and you try 210 00:05:48,690 --> 00:05:48,700 would normally use as a nut and you try 211 00:05:48,700 --> 00:05:51,240 would normally use as a nut and you try to thread the fastener into it if it 212 00:05:51,240 --> 00:05:51,250 to thread the fastener into it if it 213 00:05:51,250 --> 00:05:55,710 to thread the fastener into it if it goes it's fine you turn the the use the 214 00:05:55,710 --> 00:05:55,720 goes it's fine you turn the the use the 215 00:05:55,720 --> 00:05:57,870 goes it's fine you turn the the use the other one the no go and if it doesn't go 216 00:05:57,870 --> 00:05:57,880 other one the no go and if it doesn't go 217 00:05:57,880 --> 00:05:59,670 other one the no go and if it doesn't go in that one that means you are within 218 00:05:59,670 --> 00:05:59,680 in that one that means you are within 219 00:05:59,680 --> 00:06:02,760 in that one that means you are within the acceptable limits it doesn't tell 220 00:06:02,760 --> 00:06:02,770 the acceptable limits it doesn't tell 221 00:06:02,770 --> 00:06:06,150 the acceptable limits it doesn't tell you exactly what your dimensions are but 222 00:06:06,150 --> 00:06:06,160 you exactly what your dimensions are but 223 00:06:06,160 --> 00:06:07,650 you exactly what your dimensions are but it just tells you that the thing will 224 00:06:07,650 --> 00:06:07,660 it just tells you that the thing will 225 00:06:07,660 --> 00:06:10,560 it just tells you that the thing will work so that's called the the functional 226 00:06:10,560 --> 00:06:10,570 work so that's called the the functional 227 00:06:10,570 --> 00:06:15,480 work so that's called the the functional diameter if you will system 22 includes 228 00:06:15,480 --> 00:06:15,490 diameter if you will system 22 includes 229 00:06:15,490 --> 00:06:17,820 diameter if you will system 22 includes the system 21 measurements plus pitch 230 00:06:17,820 --> 00:06:17,830 the system 21 measurements plus pitch 231 00:06:17,830 --> 00:06:20,250 the system 21 measurements plus pitch diameter you can either measure it with 232 00:06:20,250 --> 00:06:20,260 diameter you can either measure it with 233 00:06:20,260 --> 00:06:27,629 diameter you can either measure it with a pitch micrometer which is a micrometer 234 00:06:27,629 --> 00:06:27,639 a pitch micrometer which is a micrometer 235 00:06:27,639 --> 00:06:33,600 a pitch micrometer which is a micrometer that has a grooved head on one end of it 236 00:06:33,600 --> 00:06:33,610 that has a grooved head on one end of it 237 00:06:33,610 --> 00:06:36,360 that has a grooved head on one end of it that fits over a thread then you have a 238 00:06:36,360 --> 00:06:36,370 that fits over a thread then you have a 239 00:06:36,370 --> 00:06:39,390 that fits over a thread then you have a pin type on the other one that fits in a 240 00:06:39,390 --> 00:06:39,400 pin type on the other one that fits in a 241 00:06:39,400 --> 00:06:44,270 pin type on the other one that fits in a thread and you can span this across the 242 00:06:44,270 --> 00:06:44,280 thread and you can span this across the 243 00:06:44,280 --> 00:06:49,589 thread and you can span this across the OD of the threaded area and get a 244 00:06:49,589 --> 00:06:49,599 OD of the threaded area and get a 245 00:06:49,599 --> 00:06:54,529 OD of the threaded area and get a reading which will give you the actual 246 00:06:54,529 --> 00:06:54,539 reading which will give you the actual 247 00:06:54,539 --> 00:06:57,269 reading which will give you the actual diameter pitch diameter that you want 248 00:06:57,269 --> 00:06:57,279 diameter pitch diameter that you want 249 00:06:57,279 --> 00:06:59,399 diameter pitch diameter that you want and you can look on the table in and see 250 00:06:59,399 --> 00:06:59,409 and you can look on the table in and see 251 00:06:59,409 --> 00:07:00,989 and you can look on the table in and see whether it's within the tolerances that 252 00:07:00,989 --> 00:07:00,999 whether it's within the tolerances that 253 00:07:00,999 --> 00:07:04,679 whether it's within the tolerances that you want the thread groove diameter 254 00:07:04,679 --> 00:07:04,689 you want the thread groove diameter 255 00:07:04,689 --> 00:07:08,699 you want the thread groove diameter which is the measurement between threads 256 00:07:08,699 --> 00:07:08,709 which is the measurement between threads 257 00:07:08,709 --> 00:07:11,819 which is the measurement between threads at the pitch diameter point the 258 00:07:11,819 --> 00:07:11,829 at the pitch diameter point the 259 00:07:11,829 --> 00:07:14,069 at the pitch diameter point the functional diameter which you get from 260 00:07:14,069 --> 00:07:14,079 functional diameter which you get from 261 00:07:14,079 --> 00:07:17,699 functional diameter which you get from up here with a go/no-go gauge leading 262 00:07:17,699 --> 00:07:17,709 up here with a go/no-go gauge leading 263 00:07:17,709 --> 00:07:20,719 up here with a go/no-go gauge leading flank angles and that's just go no go 264 00:07:20,719 --> 00:07:20,729 flank angles and that's just go no go 265 00:07:20,729 --> 00:07:23,669 flank angles and that's just go no go minor diameter and then you can measure 266 00:07:23,669 --> 00:07:23,679 minor diameter and then you can measure 267 00:07:23,679 --> 00:07:27,659 minor diameter and then you can measure the route profile but I found that that 268 00:07:27,659 --> 00:07:27,669 the route profile but I found that that 269 00:07:27,669 --> 00:07:30,329 the route profile but I found that that is not done that much unless somebody 270 00:07:30,329 --> 00:07:30,339 is not done that much unless somebody 271 00:07:30,339 --> 00:07:34,699 is not done that much unless somebody insists that it's done system 23 272 00:07:34,699 --> 00:07:34,709 insists that it's done system 23 273 00:07:34,709 --> 00:07:37,589 insists that it's done system 23 includes all the others plus now you get 274 00:07:37,589 --> 00:07:37,599 includes all the others plus now you get 275 00:07:37,599 --> 00:07:39,629 includes all the others plus now you get into the roundness of the pitch cylinder 276 00:07:39,629 --> 00:07:39,639 into the roundness of the pitch cylinder 277 00:07:39,639 --> 00:07:43,739 into the roundness of the pitch cylinder itself the taper of it in other words if 278 00:07:43,739 --> 00:07:43,749 itself the taper of it in other words if 279 00:07:43,749 --> 00:07:46,129 itself the taper of it in other words if you take the whole thing as a cylinder 280 00:07:46,129 --> 00:07:46,139 you take the whole thing as a cylinder 281 00:07:46,139 --> 00:07:50,189 you take the whole thing as a cylinder do you have a taper on it is it round or 282 00:07:50,189 --> 00:07:50,199 do you have a taper on it is it round or 283 00:07:50,199 --> 00:07:54,119 do you have a taper on it is it round or is it lopsided the cumulative thread 284 00:07:54,119 --> 00:07:54,129 is it lopsided the cumulative thread 285 00:07:54,129 --> 00:07:56,429 is it lopsided the cumulative thread form variation going through the thing 286 00:07:56,429 --> 00:07:56,439 form variation going through the thing 287 00:07:56,439 --> 00:07:58,949 form variation going through the thing and checking to see whether it varies 288 00:07:58,949 --> 00:07:58,959 and checking to see whether it varies 289 00:07:58,959 --> 00:08:01,559 and checking to see whether it varies any from one end to the other the 290 00:08:01,559 --> 00:08:01,569 any from one end to the other the 291 00:08:01,569 --> 00:08:03,869 any from one end to the other the leading helix angle variation the flank 292 00:08:03,869 --> 00:08:03,879 leading helix angle variation the flank 293 00:08:03,879 --> 00:08:07,949 leading helix angle variation the flank angle variation on the threads run out 294 00:08:07,949 --> 00:08:07,959 angle variation on the threads run out 295 00:08:07,959 --> 00:08:11,519 angle variation on the threads run out an even surface texture now surface 296 00:08:11,519 --> 00:08:11,529 an even surface texture now surface 297 00:08:11,529 --> 00:08:14,069 an even surface texture now surface texture on the threads usually is not a 298 00:08:14,069 --> 00:08:14,079 texture on the threads usually is not a 299 00:08:14,079 --> 00:08:17,159 texture on the threads usually is not a problem but you could measure can see it 300 00:08:17,159 --> 00:08:17,169 problem but you could measure can see it 301 00:08:17,169 --> 00:08:19,279 problem but you could measure can see it would only be if the thing had been 302 00:08:19,279 --> 00:08:19,289 would only be if the thing had been 303 00:08:19,289 --> 00:08:21,839 would only be if the thing had been coated with some sort of a coating that 304 00:08:21,839 --> 00:08:21,849 coated with some sort of a coating that 305 00:08:21,849 --> 00:08:25,739 coated with some sort of a coating that was not electronically directly 306 00:08:25,739 --> 00:08:25,749 was not electronically directly 307 00:08:25,749 --> 00:08:28,199 was not electronically directly deposited in other words if you had 308 00:08:28,199 --> 00:08:28,209 deposited in other words if you had 309 00:08:28,209 --> 00:08:30,239 deposited in other words if you had galvanized threads then you could have 310 00:08:30,239 --> 00:08:30,249 galvanized threads then you could have 311 00:08:30,249 --> 00:08:33,980 galvanized threads then you could have have a problem because you'd have extra 312 00:08:33,980 --> 00:08:33,990 have a problem because you'd have extra 313 00:08:33,990 --> 00:08:36,629 have a problem because you'd have extra plating material in the threads and 314 00:08:36,629 --> 00:08:36,639 plating material in the threads and 315 00:08:36,639 --> 00:08:38,670 plating material in the threads and after you've gone through all of these 316 00:08:38,670 --> 00:08:38,680 after you've gone through all of these 317 00:08:38,680 --> 00:08:44,179 after you've gone through all of these things this is just four threads 318 00:08:44,179 --> 00:08:44,189 things this is just four threads 319 00:08:44,189 --> 00:08:46,470 things this is just four threads nothing's been done on on the rest of 320 00:08:46,470 --> 00:08:46,480 nothing's been done on on the rest of 321 00:08:46,480 --> 00:08:48,720 nothing's been done on on the rest of the fastener so you could have a huge 322 00:08:48,720 --> 00:08:48,730 the fastener so you could have a huge 323 00:08:48,730 --> 00:08:50,249 the fastener so you could have a huge crack in and it wouldn't make any 324 00:08:50,249 --> 00:08:50,259 crack in and it wouldn't make any 325 00:08:50,259 --> 00:08:52,259 crack in and it wouldn't make any difference because if you passed 326 00:08:52,259 --> 00:08:52,269 difference because if you passed 327 00:08:52,269 --> 00:08:53,790 difference because if you passed everything else the guys say well I 328 00:08:53,790 --> 00:08:53,800 everything else the guys say well I 329 00:08:53,800 --> 00:08:55,759 everything else the guys say well I inspected the threads and they're good 330 00:08:55,759 --> 00:08:55,769 inspected the threads and they're good 331 00:08:55,769 --> 00:08:58,170 inspected the threads and they're good so you still have to look to see if 332 00:08:58,170 --> 00:08:58,180 so you still have to look to see if 333 00:08:58,180 --> 00:09:02,470 so you still have to look to see if there's anything else wrong 334 00:09:02,470 --> 00:09:02,480 335 00:09:02,480 --> 00:09:05,500 now for internal threads you have the go 336 00:09:05,500 --> 00:09:05,510 now for internal threads you have the go 337 00:09:05,510 --> 00:09:08,890 now for internal threads you have the go no-go and the minor diameter and that's 338 00:09:08,890 --> 00:09:08,900 no-go and the minor diameter and that's 339 00:09:08,900 --> 00:09:11,830 no-go and the minor diameter and that's about all it's usually check the the go 340 00:09:11,830 --> 00:09:11,840 about all it's usually check the the go 341 00:09:11,840 --> 00:09:15,700 about all it's usually check the the go no-go gauge one end fits the other one 342 00:09:15,700 --> 00:09:15,710 no-go gauge one end fits the other one 343 00:09:15,710 --> 00:09:17,890 no-go gauge one end fits the other one doesn't and then with the minor diameter 344 00:09:17,890 --> 00:09:17,900 doesn't and then with the minor diameter 345 00:09:17,900 --> 00:09:20,590 doesn't and then with the minor diameter you use a regular plug to slip in to 346 00:09:20,590 --> 00:09:20,600 you use a regular plug to slip in to 347 00:09:20,600 --> 00:09:22,420 you use a regular plug to slip in to check to see if it is okay 348 00:09:22,420 --> 00:09:22,430 check to see if it is okay 349 00:09:22,430 --> 00:09:26,920 check to see if it is okay then you move to the system 22 it 350 00:09:26,920 --> 00:09:26,930 then you move to the system 22 it 351 00:09:26,930 --> 00:09:29,320 then you move to the system 22 it includes the 21 and then you go for 352 00:09:29,320 --> 00:09:29,330 includes the 21 and then you go for 353 00:09:29,330 --> 00:09:31,540 includes the 21 and then you go for minimum material pitch diameter a thread 354 00:09:31,540 --> 00:09:31,550 minimum material pitch diameter a thread 355 00:09:31,550 --> 00:09:34,060 minimum material pitch diameter a thread groove diameter and the angles on the 356 00:09:34,060 --> 00:09:34,070 groove diameter and the angles on the 357 00:09:34,070 --> 00:09:36,610 groove diameter and the angles on the threads but since this is internal 358 00:09:36,610 --> 00:09:36,620 threads but since this is internal 359 00:09:36,620 --> 00:09:39,610 threads but since this is internal thread this is hard to do so usually 360 00:09:39,610 --> 00:09:39,620 thread this is hard to do so usually 361 00:09:39,620 --> 00:09:43,320 thread this is hard to do so usually people don't do it now here's a go/no-go 362 00:09:43,320 --> 00:09:43,330 people don't do it now here's a go/no-go 363 00:09:43,330 --> 00:09:47,560 people don't do it now here's a go/no-go gauge one side will thread in if it's in 364 00:09:47,560 --> 00:09:47,570 gauge one side will thread in if it's in 365 00:09:47,570 --> 00:09:49,900 gauge one side will thread in if it's in normal tolerance the other side won't 366 00:09:49,900 --> 00:09:49,910 normal tolerance the other side won't 367 00:09:49,910 --> 00:09:53,950 normal tolerance the other side won't and this is used to check internal 368 00:09:53,950 --> 00:09:53,960 and this is used to check internal 369 00:09:53,960 --> 00:09:57,580 and this is used to check internal threaded or tapped holes and that's the 370 00:09:57,580 --> 00:09:57,590 threaded or tapped holes and that's the 371 00:09:57,590 --> 00:09:59,440 threaded or tapped holes and that's the only usually that's about the only 372 00:09:59,440 --> 00:09:59,450 only usually that's about the only 373 00:09:59,450 --> 00:10:02,950 only usually that's about the only acceptance that people use I found here 374 00:10:02,950 --> 00:10:02,960 acceptance that people use I found here 375 00:10:02,960 --> 00:10:06,870 acceptance that people use I found here is the go no-go pen for just checking 376 00:10:06,870 --> 00:10:06,880 is the go no-go pen for just checking 377 00:10:06,880 --> 00:10:10,150 is the go no-go pen for just checking the minimum diameter in a threaded hole 378 00:10:10,150 --> 00:10:10,160 the minimum diameter in a threaded hole 379 00:10:10,160 --> 00:10:15,270 the minimum diameter in a threaded hole to see if it is within tolerances and so 380 00:10:15,270 --> 00:10:15,280 to see if it is within tolerances and so 381 00:10:15,280 --> 00:10:18,550 to see if it is within tolerances and so this one is fine if it and this one's 382 00:10:18,550 --> 00:10:18,560 this one is fine if it and this one's 383 00:10:18,560 --> 00:10:22,950 this one is fine if it and this one's not supposed to go it is bigger than the 384 00:10:22,950 --> 00:10:22,960 not supposed to go it is bigger than the 385 00:10:22,960 --> 00:10:25,480 not supposed to go it is bigger than the tolerance bandwidth will a lot would 386 00:10:25,480 --> 00:10:25,490 tolerance bandwidth will a lot would 387 00:10:25,490 --> 00:10:32,310 tolerance bandwidth will a lot would allow it the hole to be then for the 388 00:10:32,310 --> 00:10:32,320 allow it the hole to be then for the 389 00:10:32,320 --> 00:10:35,620 allow it the hole to be then for the system 23 it includes the the others 390 00:10:35,620 --> 00:10:35,630 system 23 it includes the the others 391 00:10:35,630 --> 00:10:37,630 system 23 it includes the the others plus the roundness of the pitch cylinder 392 00:10:37,630 --> 00:10:37,640 plus the roundness of the pitch cylinder 393 00:10:37,640 --> 00:10:42,270 plus the roundness of the pitch cylinder and they taper the pitch cylinder and 394 00:10:42,270 --> 00:10:42,280 and they taper the pitch cylinder and 395 00:10:42,280 --> 00:10:46,900 and they taper the pitch cylinder and but still nothing on the internal thread 396 00:10:46,900 --> 00:10:46,910 but still nothing on the internal thread 397 00:10:46,910 --> 00:10:49,840 but still nothing on the internal thread radius regardless of what you call out 398 00:10:49,840 --> 00:10:49,850 radius regardless of what you call out 399 00:10:49,850 --> 00:10:52,180 radius regardless of what you call out it's not measured unless you would go in 400 00:10:52,180 --> 00:10:52,190 it's not measured unless you would go in 401 00:10:52,190 --> 00:10:54,520 it's not measured unless you would go in and tell somebody you have to have it 402 00:10:54,520 --> 00:10:54,530 and tell somebody you have to have it 403 00:10:54,530 --> 00:10:57,250 and tell somebody you have to have it and then as as I mentioned earlier using 404 00:10:57,250 --> 00:10:57,260 and then as as I mentioned earlier using 405 00:10:57,260 --> 00:11:01,960 and then as as I mentioned earlier using this dental plaster type stuff you can 406 00:11:01,960 --> 00:11:01,970 this dental plaster type stuff you can 407 00:11:01,970 --> 00:11:04,180 this dental plaster type stuff you can you can actually cast it and then take 408 00:11:04,180 --> 00:11:04,190 you can actually cast it and then take 409 00:11:04,190 --> 00:11:06,310 you can actually cast it and then take it put it on an optical comparator to 410 00:11:06,310 --> 00:11:06,320 it put it on an optical comparator to 411 00:11:06,320 --> 00:11:07,780 it put it on an optical comparator to see whether you have the radius that you 412 00:11:07,780 --> 00:11:07,790 see whether you have the radius that you 413 00:11:07,790 --> 00:11:11,480 see whether you have the radius that you want 414 00:11:11,480 --> 00:11:11,490 415 00:11:11,490 --> 00:11:15,829 so now we move on and and to the the 416 00:11:15,829 --> 00:11:15,839 so now we move on and and to the the 417 00:11:15,839 --> 00:11:19,220 so now we move on and and to the the cold hard facts of life that even though 418 00:11:19,220 --> 00:11:19,230 cold hard facts of life that even though 419 00:11:19,230 --> 00:11:21,290 cold hard facts of life that even though you've inspected the heck out of the 420 00:11:21,290 --> 00:11:21,300 you've inspected the heck out of the 421 00:11:21,300 --> 00:11:23,780 you've inspected the heck out of the threads if with these three systems if 422 00:11:23,780 --> 00:11:23,790 threads if with these three systems if 423 00:11:23,790 --> 00:11:25,429 threads if with these three systems if you run it through all of them 424 00:11:25,429 --> 00:11:25,439 you run it through all of them 425 00:11:25,439 --> 00:11:26,540 you run it through all of them you still haven't looked for 426 00:11:26,540 --> 00:11:26,550 you still haven't looked for 427 00:11:26,550 --> 00:11:29,960 you still haven't looked for manufacturing defects for defects in the 428 00:11:29,960 --> 00:11:29,970 manufacturing defects for defects in the 429 00:11:29,970 --> 00:11:36,679 manufacturing defects for defects in the the threads FF s eighty-six federal spec 430 00:11:36,679 --> 00:11:36,689 the threads FF s eighty-six federal spec 431 00:11:36,689 --> 00:11:38,929 the threads FF s eighty-six federal spec gives examples of acceptable and 432 00:11:38,929 --> 00:11:38,939 gives examples of acceptable and 433 00:11:38,939 --> 00:11:41,869 gives examples of acceptable and unacceptable defects and we'll look at 434 00:11:41,869 --> 00:11:41,879 unacceptable defects and we'll look at 435 00:11:41,879 --> 00:11:46,759 unacceptable defects and we'll look at those and subsequent figures and you 436 00:11:46,759 --> 00:11:46,769 those and subsequent figures and you 437 00:11:46,769 --> 00:11:48,829 those and subsequent figures and you will note that the acceptance of the 438 00:11:48,829 --> 00:11:48,839 will note that the acceptance of the 439 00:11:48,839 --> 00:11:51,350 will note that the acceptance of the thread defects becomes more critical as 440 00:11:51,350 --> 00:11:51,360 thread defects becomes more critical as 441 00:11:51,360 --> 00:11:53,540 thread defects becomes more critical as the fastener strength increases and the 442 00:11:53,540 --> 00:11:53,550 the fastener strength increases and the 443 00:11:53,550 --> 00:11:56,299 the fastener strength increases and the ductility decreases so there has to be 444 00:11:56,299 --> 00:11:56,309 ductility decreases so there has to be 445 00:11:56,309 --> 00:11:59,030 ductility decreases so there has to be some engineering judgment exercised on 446 00:11:59,030 --> 00:11:59,040 some engineering judgment exercised on 447 00:11:59,040 --> 00:12:03,109 some engineering judgment exercised on it now here's one of the things threads 448 00:12:03,109 --> 00:12:03,119 it now here's one of the things threads 449 00:12:03,119 --> 00:12:05,660 it now here's one of the things threads should have no laps or seams at the root 450 00:12:05,660 --> 00:12:05,670 should have no laps or seams at the root 451 00:12:05,670 --> 00:12:09,169 should have no laps or seams at the root or the flanks the here's the root here's 452 00:12:09,169 --> 00:12:09,179 or the flanks the here's the root here's 453 00:12:09,179 --> 00:12:11,900 or the flanks the here's the root here's the flank of the thread and so in 454 00:12:11,900 --> 00:12:11,910 the flank of the thread and so in 455 00:12:11,910 --> 00:12:14,749 the flank of the thread and so in general what you're saying on this is 456 00:12:14,749 --> 00:12:14,759 general what you're saying on this is 457 00:12:14,759 --> 00:12:18,470 general what you're saying on this is any defects below the pitch diameter 458 00:12:18,470 --> 00:12:18,480 any defects below the pitch diameter 459 00:12:18,480 --> 00:12:21,289 any defects below the pitch diameter because you're loading this part of the 460 00:12:21,289 --> 00:12:21,299 because you're loading this part of the 461 00:12:21,299 --> 00:12:23,929 because you're loading this part of the thread a lot more than you are this part 462 00:12:23,929 --> 00:12:23,939 thread a lot more than you are this part 463 00:12:23,939 --> 00:12:26,809 thread a lot more than you are this part so anything below the pitch diameter in 464 00:12:26,809 --> 00:12:26,819 so anything below the pitch diameter in 465 00:12:26,819 --> 00:12:29,869 so anything below the pitch diameter in the way of a defect a noticeable defect 466 00:12:29,869 --> 00:12:29,879 the way of a defect a noticeable defect 467 00:12:29,879 --> 00:12:33,079 the way of a defect a noticeable defect you're not going to accept when you get 468 00:12:33,079 --> 00:12:33,089 you're not going to accept when you get 469 00:12:33,089 --> 00:12:35,869 you're not going to accept when you get things above the pitch diameter or 470 00:12:35,869 --> 00:12:35,879 things above the pitch diameter or 471 00:12:35,879 --> 00:12:39,259 things above the pitch diameter or outboard of it here now you can accept 472 00:12:39,259 --> 00:12:39,269 outboard of it here now you can accept 473 00:12:39,269 --> 00:12:41,210 outboard of it here now you can accept more defects there because it is more 474 00:12:41,210 --> 00:12:41,220 more defects there because it is more 475 00:12:41,220 --> 00:12:44,600 more defects there because it is more likely loaded but even so there are 476 00:12:44,600 --> 00:12:44,610 likely loaded but even so there are 477 00:12:44,610 --> 00:12:47,499 likely loaded but even so there are limits on how much you can accept on it 478 00:12:47,499 --> 00:12:47,509 limits on how much you can accept on it 479 00:12:47,509 --> 00:12:51,049 limits on how much you can accept on it so so it once again you look at it and 480 00:12:51,049 --> 00:12:51,059 so so it once again you look at it and 481 00:12:51,059 --> 00:12:52,369 so so it once again you look at it and if you find too many cracks in a 482 00:12:52,369 --> 00:12:52,379 if you find too many cracks in a 483 00:12:52,379 --> 00:12:55,639 if you find too many cracks in a fastener you really should reject it now 484 00:12:55,639 --> 00:12:55,649 fastener you really should reject it now 485 00:12:55,649 --> 00:12:58,129 fastener you really should reject it now here's something that is a lesser 486 00:12:58,129 --> 00:12:58,139 here's something that is a lesser 487 00:12:58,139 --> 00:13:01,069 here's something that is a lesser problem it just looks bad having little 488 00:13:01,069 --> 00:13:01,079 problem it just looks bad having little 489 00:13:01,079 --> 00:13:02,809 problem it just looks bad having little nicks or something like that as long as 490 00:13:02,809 --> 00:13:02,819 nicks or something like that as long as 491 00:13:02,819 --> 00:13:04,489 nicks or something like that as long as it's not a crack that's just a nick from 492 00:13:04,489 --> 00:13:04,499 it's not a crack that's just a nick from 493 00:13:04,499 --> 00:13:07,359 it's not a crack that's just a nick from handling and it doesn't affect the 494 00:13:07,359 --> 00:13:07,369 handling and it doesn't affect the 495 00:13:07,369 --> 00:13:09,530 handling and it doesn't affect the functioning of the threads you could 496 00:13:09,530 --> 00:13:09,540 functioning of the threads you could 497 00:13:09,540 --> 00:13:11,900 functioning of the threads you could probably accept a nick on the outside 498 00:13:11,900 --> 00:13:11,910 probably accept a nick on the outside 499 00:13:11,910 --> 00:13:15,559 probably accept a nick on the outside surface of the threads now here is 500 00:13:15,559 --> 00:13:15,569 surface of the threads now here is 501 00:13:15,569 --> 00:13:18,379 surface of the threads now here is another method of thread inspection a 502 00:13:18,379 --> 00:13:18,389 another method of thread inspection a 503 00:13:18,389 --> 00:13:23,650 another method of thread inspection a laser inspection method most 504 00:13:23,650 --> 00:13:23,660 laser inspection method most 505 00:13:23,660 --> 00:13:25,220 laser inspection method most manufacturing facility 506 00:13:25,220 --> 00:13:25,230 manufacturing facility 507 00:13:25,230 --> 00:13:27,950 manufacturing facility would not have this at all because it is 508 00:13:27,950 --> 00:13:27,960 would not have this at all because it is 509 00:13:27,960 --> 00:13:33,250 would not have this at all because it is a set up with a full computer printout 510 00:13:33,250 --> 00:13:33,260 a set up with a full computer printout 511 00:13:33,260 --> 00:13:35,830 a set up with a full computer printout availability and I think cost about 512 00:13:35,830 --> 00:13:35,840 availability and I think cost about 513 00:13:35,840 --> 00:13:39,560 availability and I think cost about $100,000 so you wouldn't find them in 514 00:13:39,560 --> 00:13:39,570 $100,000 so you wouldn't find them in 515 00:13:39,570 --> 00:13:43,280 $100,000 so you wouldn't find them in your normal inspection shop but it is a 516 00:13:43,280 --> 00:13:43,290 your normal inspection shop but it is a 517 00:13:43,290 --> 00:13:46,450 your normal inspection shop but it is a very accurate method of checking threads 518 00:13:46,450 --> 00:13:46,460 very accurate method of checking threads 519 00:13:46,460 --> 00:13:51,350 very accurate method of checking threads it uses laser triangulation sensors and 520 00:13:51,350 --> 00:13:51,360 it uses laser triangulation sensors and 521 00:13:51,360 --> 00:13:55,430 it uses laser triangulation sensors and a motion sensor to digitize the thread 522 00:13:55,430 --> 00:13:55,440 a motion sensor to digitize the thread 523 00:13:55,440 --> 00:13:58,640 a motion sensor to digitize the thread and form and it's a non-contact method 524 00:13:58,640 --> 00:13:58,650 and form and it's a non-contact method 525 00:13:58,650 --> 00:14:02,840 and form and it's a non-contact method you're using a laser beam and the the 526 00:14:02,840 --> 00:14:02,850 you're using a laser beam and the the 527 00:14:02,850 --> 00:14:04,940 you're using a laser beam and the the measurements are made by comparing the 528 00:14:04,940 --> 00:14:04,950 measurements are made by comparing the 529 00:14:04,950 --> 00:14:07,280 measurements are made by comparing the data obtained by laser scanning the 530 00:14:07,280 --> 00:14:07,290 data obtained by laser scanning the 531 00:14:07,290 --> 00:14:09,650 data obtained by laser scanning the thread to a perfect mating part that has 532 00:14:09,650 --> 00:14:09,660 thread to a perfect mating part that has 533 00:14:09,660 --> 00:14:11,840 thread to a perfect mating part that has been mathematically created in software 534 00:14:11,840 --> 00:14:11,850 been mathematically created in software 535 00:14:11,850 --> 00:14:17,480 been mathematically created in software and the thread axis is the method you 536 00:14:17,480 --> 00:14:17,490 and the thread axis is the method you 537 00:14:17,490 --> 00:14:19,160 and the thread axis is the method you use for spinning it around so you can 538 00:14:19,160 --> 00:14:19,170 use for spinning it around so you can 539 00:14:19,170 --> 00:14:23,500 use for spinning it around so you can check it at different points now these 540 00:14:23,500 --> 00:14:23,510 check it at different points now these 541 00:14:23,510 --> 00:14:29,470 check it at different points now these machines though are used for inspecting 542 00:14:29,470 --> 00:14:29,480 machines though are used for inspecting 543 00:14:29,480 --> 00:14:31,940 machines though are used for inspecting inspection equipment because they're 544 00:14:31,940 --> 00:14:31,950 inspection equipment because they're 545 00:14:31,950 --> 00:14:33,650 inspection equipment because they're accurate enough for instance you can use 546 00:14:33,650 --> 00:14:33,660 accurate enough for instance you can use 547 00:14:33,660 --> 00:14:36,290 accurate enough for instance you can use them to inspect the thread plug gauges 548 00:14:36,290 --> 00:14:36,300 them to inspect the thread plug gauges 549 00:14:36,300 --> 00:14:40,160 them to inspect the thread plug gauges and go/no-go gauges dyes and taps and 550 00:14:40,160 --> 00:14:40,170 and go/no-go gauges dyes and taps and 551 00:14:40,170 --> 00:14:42,980 and go/no-go gauges dyes and taps and they can handle parts up to six inches 552 00:14:42,980 --> 00:14:42,990 they can handle parts up to six inches 553 00:14:42,990 --> 00:14:45,830 they can handle parts up to six inches in diameter and four to 64 threads per 554 00:14:45,830 --> 00:14:45,840 in diameter and four to 64 threads per 555 00:14:45,840 --> 00:14:48,920 in diameter and four to 64 threads per inch now it's a time consuming thing so 556 00:14:48,920 --> 00:14:48,930 inch now it's a time consuming thing so 557 00:14:48,930 --> 00:14:51,620 inch now it's a time consuming thing so the the places that you would use it as 558 00:14:51,620 --> 00:14:51,630 the the places that you would use it as 559 00:14:51,630 --> 00:14:56,600 the the places that you would use it as say you don't have very many bolts 560 00:14:56,600 --> 00:14:56,610 say you don't have very many bolts 561 00:14:56,610 --> 00:14:59,180 say you don't have very many bolts holding an engine on a plane so on a 747 562 00:14:59,180 --> 00:14:59,190 holding an engine on a plane so on a 747 563 00:14:59,190 --> 00:15:03,020 holding an engine on a plane so on a 747 if you wanted to inspect the super high 564 00:15:03,020 --> 00:15:03,030 if you wanted to inspect the super high 565 00:15:03,030 --> 00:15:05,240 if you wanted to inspect the super high strength alloy steel bolts that are 566 00:15:05,240 --> 00:15:05,250 strength alloy steel bolts that are 567 00:15:05,250 --> 00:15:07,580 strength alloy steel bolts that are holding it on you would run them through 568 00:15:07,580 --> 00:15:07,590 holding it on you would run them through 569 00:15:07,590 --> 00:15:09,410 holding it on you would run them through an inspection procedure like this check 570 00:15:09,410 --> 00:15:09,420 an inspection procedure like this check 571 00:15:09,420 --> 00:15:14,060 an inspection procedure like this check every one up because they're your it's a 572 00:15:14,060 --> 00:15:14,070 every one up because they're your it's a 573 00:15:14,070 --> 00:15:18,260 every one up because they're your it's a super critical application on the figure 574 00:15:18,260 --> 00:15:18,270 super critical application on the figure 575 00:15:18,270 --> 00:15:20,360 super critical application on the figure seventy eight is a picture of this one 576 00:15:20,360 --> 00:15:20,370 seventy eight is a picture of this one 577 00:15:20,370 --> 00:15:23,540 seventy eight is a picture of this one you set the fastener down on the the 578 00:15:23,540 --> 00:15:23,550 you set the fastener down on the the 579 00:15:23,550 --> 00:15:26,750 you set the fastener down on the the head you can turn it you scan the thread 580 00:15:26,750 --> 00:15:26,760 head you can turn it you scan the thread 581 00:15:26,760 --> 00:15:30,860 head you can turn it you scan the thread in and because this is on a rotary 582 00:15:30,860 --> 00:15:30,870 in and because this is on a rotary 583 00:15:30,870 --> 00:15:38,180 in and because this is on a rotary spindle here and once you you scan it 584 00:15:38,180 --> 00:15:38,190 spindle here and once you you scan it 585 00:15:38,190 --> 00:15:42,290 spindle here and once you you scan it then the the table will index to another 586 00:15:42,290 --> 00:15:42,300 then the the table will index to another 587 00:15:42,300 --> 00:15:47,139 then the the table will index to another location then you get a thread profile 588 00:15:47,139 --> 00:15:47,149 location then you get a thread profile 589 00:15:47,149 --> 00:15:49,699 location then you get a thread profile that you can compare it to a perfect 590 00:15:49,699 --> 00:15:49,709 that you can compare it to a perfect 591 00:15:49,709 --> 00:15:54,139 that you can compare it to a perfect thread so if you're really doing 592 00:15:54,139 --> 00:15:54,149 thread so if you're really doing 593 00:15:54,149 --> 00:15:56,210 thread so if you're really doing something critical this will work in 594 00:15:56,210 --> 00:15:56,220 something critical this will work in 595 00:15:56,220 --> 00:16:00,230 something critical this will work in fact I believe marshal I think got one 596 00:16:00,230 --> 00:16:00,240 fact I believe marshal I think got one 597 00:16:00,240 --> 00:16:03,199 fact I believe marshal I think got one of these machines because they wanted to 598 00:16:03,199 --> 00:16:03,209 of these machines because they wanted to 599 00:16:03,209 --> 00:16:06,679 of these machines because they wanted to use it for checking some of the super 600 00:16:06,679 --> 00:16:06,689 use it for checking some of the super 601 00:16:06,689 --> 00:16:11,769 use it for checking some of the super critical flight Hardware for shuttle and 602 00:16:11,769 --> 00:16:11,779 critical flight Hardware for shuttle and 603 00:16:11,779 --> 00:16:13,670 critical flight Hardware for shuttle and installations that they were putting 604 00:16:13,670 --> 00:16:13,680 installations that they were putting 605 00:16:13,680 --> 00:16:16,610 installations that they were putting together there so I went looked at him 606 00:16:16,610 --> 00:16:16,620 together there so I went looked at him 607 00:16:16,620 --> 00:16:18,769 together there so I went looked at him there's a company here in West Lake I 608 00:16:18,769 --> 00:16:18,779 there's a company here in West Lake I 609 00:16:18,779 --> 00:16:21,650 there's a company here in West Lake I believe handles them and they do work 610 00:16:21,650 --> 00:16:21,660 believe handles them and they do work 611 00:16:21,660 --> 00:16:25,610 believe handles them and they do work well except that you would not inspect 612 00:16:25,610 --> 00:16:25,620 well except that you would not inspect 613 00:16:25,620 --> 00:16:28,790 well except that you would not inspect something that was just an ordinary 614 00:16:28,790 --> 00:16:28,800 something that was just an ordinary 615 00:16:28,800 --> 00:16:30,619 something that was just an ordinary production part because it's too eh too 616 00:16:30,619 --> 00:16:30,629 production part because it's too eh too 617 00:16:30,629 --> 00:16:34,819 production part because it's too eh too time-consuming too expensive now there 618 00:16:34,819 --> 00:16:34,829 time-consuming too expensive now there 619 00:16:34,829 --> 00:16:37,699 time-consuming too expensive now there have been various discussions through 620 00:16:37,699 --> 00:16:37,709 have been various discussions through 621 00:16:37,709 --> 00:16:41,449 have been various discussions through the years on how variation in pitch 622 00:16:41,449 --> 00:16:41,459 the years on how variation in pitch 623 00:16:41,459 --> 00:16:44,889 the years on how variation in pitch diameter on a fastener can do them in 624 00:16:44,889 --> 00:16:44,899 diameter on a fastener can do them in 625 00:16:44,899 --> 00:16:49,550 diameter on a fastener can do them in and I guess this arguments been going on 626 00:16:49,550 --> 00:16:49,560 and I guess this arguments been going on 627 00:16:49,560 --> 00:16:51,800 and I guess this arguments been going on for 30 or 40 years or something like 628 00:16:51,800 --> 00:16:51,810 for 30 or 40 years or something like 629 00:16:51,810 --> 00:16:54,050 for 30 or 40 years or something like that so the industrial fasteners 630 00:16:54,050 --> 00:16:54,060 that so the industrial fasteners 631 00:16:54,060 --> 00:16:57,829 that so the industrial fasteners Institute here in Cleveland initiated a 632 00:16:57,829 --> 00:16:57,839 Institute here in Cleveland initiated a 633 00:16:57,839 --> 00:17:01,189 Institute here in Cleveland initiated a research effort in 1993 to manufacture 634 00:17:01,189 --> 00:17:01,199 research effort in 1993 to manufacture 635 00:17:01,199 --> 00:17:03,829 research effort in 1993 to manufacture measure and test a bunch of fasteners 636 00:17:03,829 --> 00:17:03,839 measure and test a bunch of fasteners 637 00:17:03,839 --> 00:17:06,529 measure and test a bunch of fasteners that were deliberately made out of 638 00:17:06,529 --> 00:17:06,539 that were deliberately made out of 639 00:17:06,539 --> 00:17:09,230 that were deliberately made out of tolerance on pitch diameter just to see 640 00:17:09,230 --> 00:17:09,240 tolerance on pitch diameter just to see 641 00:17:09,240 --> 00:17:12,649 tolerance on pitch diameter just to see how bad it was and they put out an 642 00:17:12,649 --> 00:17:12,659 how bad it was and they put out an 643 00:17:12,659 --> 00:17:14,899 how bad it was and they put out an article on that in mechanical 644 00:17:14,899 --> 00:17:14,909 article on that in mechanical 645 00:17:14,909 --> 00:17:19,299 article on that in mechanical engineering in the December 1996 edition 646 00:17:19,299 --> 00:17:19,309 engineering in the December 1996 edition 647 00:17:19,309 --> 00:17:23,539 engineering in the December 1996 edition and the conclusion was the variations in 648 00:17:23,539 --> 00:17:23,549 and the conclusion was the variations in 649 00:17:23,549 --> 00:17:26,960 and the conclusion was the variations in pitch diameter don't have a very big 650 00:17:26,960 --> 00:17:26,970 pitch diameter don't have a very big 651 00:17:26,970 --> 00:17:28,820 pitch diameter don't have a very big effect on the joint strength fatigue 652 00:17:28,820 --> 00:17:28,830 effect on the joint strength fatigue 653 00:17:28,830 --> 00:17:31,279 effect on the joint strength fatigue life and clamping performance in other 654 00:17:31,279 --> 00:17:31,289 life and clamping performance in other 655 00:17:31,289 --> 00:17:33,020 life and clamping performance in other words it can be out of Tolerance quite a 656 00:17:33,020 --> 00:17:33,030 words it can be out of Tolerance quite a 657 00:17:33,030 --> 00:17:37,039 words it can be out of Tolerance quite a bit and still pass the standard tensile 658 00:17:37,039 --> 00:17:37,049 bit and still pass the standard tensile 659 00:17:37,049 --> 00:17:39,470 bit and still pass the standard tensile and proof load requirements which kind 660 00:17:39,470 --> 00:17:39,480 and proof load requirements which kind 661 00:17:39,480 --> 00:17:42,860 and proof load requirements which kind of surprised a lot of people I I thought 662 00:17:42,860 --> 00:17:42,870 of surprised a lot of people I I thought 663 00:17:42,870 --> 00:17:44,060 of surprised a lot of people I I thought it would have more effect than that 664 00:17:44,060 --> 00:17:44,070 it would have more effect than that 665 00:17:44,070 --> 00:17:46,460 it would have more effect than that because varying the pitch diameter of 666 00:17:46,460 --> 00:17:46,470 because varying the pitch diameter of 667 00:17:46,470 --> 00:17:49,360 because varying the pitch diameter of course you are loading your threads 668 00:17:49,360 --> 00:17:49,370 course you are loading your threads 669 00:17:49,370 --> 00:17:51,490 course you are loading your threads unevenly 670 00:17:51,490 --> 00:17:51,500 unevenly 671 00:17:51,500 --> 00:17:55,260 unevenly but evidently what happens is that 672 00:17:55,260 --> 00:17:55,270 but evidently what happens is that 673 00:17:55,270 --> 00:17:58,150 but evidently what happens is that though you are loading them unevenly 674 00:17:58,150 --> 00:17:58,160 though you are loading them unevenly 675 00:17:58,160 --> 00:18:01,480 though you are loading them unevenly you're spreading the load around of 676 00:18:01,480 --> 00:18:01,490 you're spreading the load around of 677 00:18:01,490 --> 00:18:03,760 you're spreading the load around of where you get more yielding and it'll 678 00:18:03,760 --> 00:18:03,770 where you get more yielding and it'll 679 00:18:03,770 --> 00:18:04,900 where you get more yielding and it'll still carry the load 680 00:18:04,900 --> 00:18:04,910 still carry the load 681 00:18:04,910 --> 00:18:08,200 still carry the load so they some of the people who did the 682 00:18:08,200 --> 00:18:08,210 so they some of the people who did the 683 00:18:08,210 --> 00:18:11,380 so they some of the people who did the testing were surprised if it was that it 684 00:18:11,380 --> 00:18:11,390 testing were surprised if it was that it 685 00:18:11,390 --> 00:18:15,940 testing were surprised if it was that it was that good now moving to the other 686 00:18:15,940 --> 00:18:15,950 was that good now moving to the other 687 00:18:15,950 --> 00:18:17,950 was that good now moving to the other parts of the fastener the head and shank 688 00:18:17,950 --> 00:18:17,960 parts of the fastener the head and shank 689 00:18:17,960 --> 00:18:22,990 parts of the fastener the head and shank inspection there's one of the places 690 00:18:22,990 --> 00:18:23,000 inspection there's one of the places 691 00:18:23,000 --> 00:18:24,940 inspection there's one of the places where you can really get in front into 692 00:18:24,940 --> 00:18:24,950 where you can really get in front into 693 00:18:24,950 --> 00:18:27,460 where you can really get in front into trouble with a fastener is having any 694 00:18:27,460 --> 00:18:27,470 trouble with a fastener is having any 695 00:18:27,470 --> 00:18:31,810 trouble with a fastener is having any kind of a defect in the Phillip radius 696 00:18:31,810 --> 00:18:31,820 kind of a defect in the Phillip radius 697 00:18:31,820 --> 00:18:33,940 kind of a defect in the Phillip radius under the head because since that is one 698 00:18:33,940 --> 00:18:33,950 under the head because since that is one 699 00:18:33,950 --> 00:18:37,240 under the head because since that is one of your highest loaded areas any kind of 700 00:18:37,240 --> 00:18:37,250 of your highest loaded areas any kind of 701 00:18:37,250 --> 00:18:40,600 of your highest loaded areas any kind of a crack there usually will propagate to 702 00:18:40,600 --> 00:18:40,610 a crack there usually will propagate to 703 00:18:40,610 --> 00:18:46,120 a crack there usually will propagate to cause failure so a list of defects and 704 00:18:46,120 --> 00:18:46,130 cause failure so a list of defects and 705 00:18:46,130 --> 00:18:48,640 cause failure so a list of defects and their definitions are given an ASTM F 706 00:18:48,640 --> 00:18:48,650 their definitions are given an ASTM F 707 00:18:48,650 --> 00:18:54,010 their definitions are given an ASTM F 788 that is for the fasteners and nut 708 00:18:54,010 --> 00:18:54,020 788 that is for the fasteners and nut 709 00:18:54,020 --> 00:18:59,130 788 that is for the fasteners and nut inspection is covered in ASTM F 812 710 00:18:59,130 --> 00:18:59,140 inspection is covered in ASTM F 812 711 00:18:59,140 --> 00:19:01,930 inspection is covered in ASTM F 812 there are very similar methods of 712 00:19:01,930 --> 00:19:01,940 there are very similar methods of 713 00:19:01,940 --> 00:19:05,320 there are very similar methods of inspections so I'll cover primarily the 714 00:19:05,320 --> 00:19:05,330 inspections so I'll cover primarily the 715 00:19:05,330 --> 00:19:10,210 inspections so I'll cover primarily the ones here just for fasteners and leave 716 00:19:10,210 --> 00:19:10,220 ones here just for fasteners and leave 717 00:19:10,220 --> 00:19:16,260 ones here just for fasteners and leave the the other part out now quench cracks 718 00:19:16,260 --> 00:19:16,270 719 00:19:16,270 --> 00:19:19,350 quench cracks are caused by excessively 720 00:19:19,350 --> 00:19:19,360 quench cracks are caused by excessively 721 00:19:19,360 --> 00:19:23,260 quench cracks are caused by excessively high thermal and transformation stresses 722 00:19:23,260 --> 00:19:23,270 high thermal and transformation stresses 723 00:19:23,270 --> 00:19:29,650 high thermal and transformation stresses during heat treatment and so getting one 724 00:19:29,650 --> 00:19:29,660 during heat treatment and so getting one 725 00:19:29,660 --> 00:19:32,170 during heat treatment and so getting one of those means that you've got problems 726 00:19:32,170 --> 00:19:32,180 of those means that you've got problems 727 00:19:32,180 --> 00:19:35,530 of those means that you've got problems with the material so you could have a 728 00:19:35,530 --> 00:19:35,540 with the material so you could have a 729 00:19:35,540 --> 00:19:42,760 with the material so you could have a problem with it so in general quench 730 00:19:42,760 --> 00:19:42,770 problem with it so in general quench 731 00:19:42,770 --> 00:19:46,930 problem with it so in general quench cracks of any detectable size by visual 732 00:19:46,930 --> 00:19:46,940 cracks of any detectable size by visual 733 00:19:46,940 --> 00:19:49,290 cracks of any detectable size by visual inspection make the fastener 734 00:19:49,290 --> 00:19:49,300 inspection make the fastener 735 00:19:49,300 --> 00:19:52,360 inspection make the fastener unacceptable and here's another one this 736 00:19:52,360 --> 00:19:52,370 unacceptable and here's another one this 737 00:19:52,370 --> 00:19:57,630 unacceptable and here's another one this is a pet peeve of mine socket head depth 738 00:19:57,630 --> 00:19:57,640 is a pet peeve of mine socket head depth 739 00:19:57,640 --> 00:20:01,330 is a pet peeve of mine socket head depth even though if you go to any of the Aunt 740 00:20:01,330 --> 00:20:01,340 even though if you go to any of the Aunt 741 00:20:01,340 --> 00:20:04,030 even though if you go to any of the Aunt suspects and 742 00:20:04,030 --> 00:20:04,040 suspects and 743 00:20:04,040 --> 00:20:07,300 suspects and or mil spects any of these on socket 744 00:20:07,300 --> 00:20:07,310 or mil spects any of these on socket 745 00:20:07,310 --> 00:20:08,380 or mil spects any of these on socket head fasteners 746 00:20:08,380 --> 00:20:08,390 head fasteners 747 00:20:08,390 --> 00:20:11,500 head fasteners they give dimensions for the depth of 748 00:20:11,500 --> 00:20:11,510 they give dimensions for the depth of 749 00:20:11,510 --> 00:20:14,770 they give dimensions for the depth of socket but I have yet to find anybody 750 00:20:14,770 --> 00:20:14,780 socket but I have yet to find anybody 751 00:20:14,780 --> 00:20:20,250 socket but I have yet to find anybody that's ever checked one we had a problem 752 00:20:20,250 --> 00:20:20,260 that's ever checked one we had a problem 753 00:20:20,260 --> 00:20:25,840 that's ever checked one we had a problem here a couple years ago with some na s 754 00:20:25,840 --> 00:20:25,850 here a couple years ago with some na s 755 00:20:25,850 --> 00:20:29,410 here a couple years ago with some na s fasteners that the heads popped off of 756 00:20:29,410 --> 00:20:29,420 fasteners that the heads popped off of 757 00:20:29,420 --> 00:20:32,310 fasteners that the heads popped off of them in a wind tunnel installation and 758 00:20:32,310 --> 00:20:32,320 them in a wind tunnel installation and 759 00:20:32,320 --> 00:20:36,990 them in a wind tunnel installation and when we looked at him the socket depth 760 00:20:36,990 --> 00:20:37,000 when we looked at him the socket depth 761 00:20:37,000 --> 00:20:42,480 when we looked at him the socket depth was too deep well see in a socket head 762 00:20:42,480 --> 00:20:42,490 was too deep well see in a socket head 763 00:20:42,490 --> 00:20:45,370 was too deep well see in a socket head if that depth gets too deep you wind up 764 00:20:45,370 --> 00:20:45,380 if that depth gets too deep you wind up 765 00:20:45,380 --> 00:20:48,070 if that depth gets too deep you wind up with a small annulus of area there is 766 00:20:48,070 --> 00:20:48,080 with a small annulus of area there is 767 00:20:48,080 --> 00:20:51,120 with a small annulus of area there is all you have left if you get below the 768 00:20:51,120 --> 00:20:51,130 all you have left if you get below the 769 00:20:51,130 --> 00:20:53,650 all you have left if you get below the the bottom of the head with the socket 770 00:20:53,650 --> 00:20:53,660 the bottom of the head with the socket 771 00:20:53,660 --> 00:20:56,830 the bottom of the head with the socket depth you're in trouble and that's what 772 00:20:56,830 --> 00:20:56,840 depth you're in trouble and that's what 773 00:20:56,840 --> 00:21:01,240 depth you're in trouble and that's what was happening and although everybody 774 00:21:01,240 --> 00:21:01,250 was happening and although everybody 775 00:21:01,250 --> 00:21:06,100 was happening and although everybody talks about him there like UFOs no 776 00:21:06,100 --> 00:21:06,110 talks about him there like UFOs no 777 00:21:06,110 --> 00:21:13,080 talks about him there like UFOs no evidence there 778 00:21:13,080 --> 00:21:13,090 779 00:21:13,090 --> 00:21:17,640 here are some examples of the things in 780 00:21:17,640 --> 00:21:17,650 here are some examples of the things in 781 00:21:17,650 --> 00:21:22,350 here are some examples of the things in head and shank inspection and cracks in 782 00:21:22,350 --> 00:21:22,360 head and shank inspection and cracks in 783 00:21:22,360 --> 00:21:26,310 head and shank inspection and cracks in general these are quenched cracks which 784 00:21:26,310 --> 00:21:26,320 general these are quenched cracks which 785 00:21:26,320 --> 00:21:29,460 general these are quenched cracks which you can see can happen in the heads in 786 00:21:29,460 --> 00:21:29,470 you can see can happen in the heads in 787 00:21:29,470 --> 00:21:34,830 you can see can happen in the heads in the shank around the top of the head but 788 00:21:34,830 --> 00:21:34,840 the shank around the top of the head but 789 00:21:34,840 --> 00:21:36,210 the shank around the top of the head but here's the one that really gets you if 790 00:21:36,210 --> 00:21:36,220 here's the one that really gets you if 791 00:21:36,220 --> 00:21:38,850 here's the one that really gets you if you have any cracks here in this radius 792 00:21:38,850 --> 00:21:38,860 you have any cracks here in this radius 793 00:21:38,860 --> 00:21:42,000 you have any cracks here in this radius fill it radius under the head you're in 794 00:21:42,000 --> 00:21:42,010 fill it radius under the head you're in 795 00:21:42,010 --> 00:21:42,750 fill it radius under the head you're in real trouble 796 00:21:42,750 --> 00:21:42,760 real trouble 797 00:21:42,760 --> 00:21:50,880 real trouble so that is from that FF s 86 or ASTM 788 798 00:21:50,880 --> 00:21:50,890 so that is from that FF s 86 or ASTM 788 799 00:21:50,890 --> 00:21:53,640 so that is from that FF s 86 or ASTM 788 I don't remember now which forging 800 00:21:53,640 --> 00:21:53,650 I don't remember now which forging 801 00:21:53,650 --> 00:21:57,780 I don't remember now which forging cracks now remember I mentioned on 802 00:21:57,780 --> 00:21:57,790 cracks now remember I mentioned on 803 00:21:57,790 --> 00:22:01,050 cracks now remember I mentioned on fasteners that the higher strength ones 804 00:22:01,050 --> 00:22:01,060 fasteners that the higher strength ones 805 00:22:01,060 --> 00:22:04,830 fasteners that the higher strength ones usually have forged heads because you 806 00:22:04,830 --> 00:22:04,840 usually have forged heads because you 807 00:22:04,840 --> 00:22:08,850 usually have forged heads because you don't want to have the discontinuity in 808 00:22:08,850 --> 00:22:08,860 don't want to have the discontinuity in 809 00:22:08,860 --> 00:22:11,580 don't want to have the discontinuity in green flow at the particularly tough 810 00:22:11,580 --> 00:22:11,590 green flow at the particularly tough 811 00:22:11,590 --> 00:22:14,940 green flow at the particularly tough illustrate Phillip radius so you can get 812 00:22:14,940 --> 00:22:14,950 illustrate Phillip radius so you can get 813 00:22:14,950 --> 00:22:17,790 illustrate Phillip radius so you can get forging cracks during the cut off or 814 00:22:17,790 --> 00:22:17,800 forging cracks during the cut off or 815 00:22:17,800 --> 00:22:19,710 forging cracks during the cut off or forging operation or even cold forging 816 00:22:19,710 --> 00:22:19,720 forging operation or even cold forging 817 00:22:19,720 --> 00:22:21,870 forging operation or even cold forging you can get some on the material if the 818 00:22:21,870 --> 00:22:21,880 you can get some on the material if the 819 00:22:21,880 --> 00:22:24,240 you can get some on the material if the material is a little bit too hard when 820 00:22:24,240 --> 00:22:24,250 material is a little bit too hard when 821 00:22:24,250 --> 00:22:26,970 material is a little bit too hard when you're when you're cold forging it and 822 00:22:26,970 --> 00:22:26,980 you're when you're cold forging it and 823 00:22:26,980 --> 00:22:29,220 you're when you're cold forging it and these are located on the top of the head 824 00:22:29,220 --> 00:22:29,230 these are located on the top of the head 825 00:22:29,230 --> 00:22:31,680 these are located on the top of the head or on the raised periphery around the 826 00:22:31,680 --> 00:22:31,690 or on the raised periphery around the 827 00:22:31,690 --> 00:22:36,330 or on the raised periphery around the indented head bolts and screws and you 828 00:22:36,330 --> 00:22:36,340 indented head bolts and screws and you 829 00:22:36,340 --> 00:22:38,940 indented head bolts and screws and you can you can except some of them if they 830 00:22:38,940 --> 00:22:38,950 can you can except some of them if they 831 00:22:38,950 --> 00:22:41,370 can you can except some of them if they are very very slight so that they're 832 00:22:41,370 --> 00:22:41,380 are very very slight so that they're 833 00:22:41,380 --> 00:22:43,710 are very very slight so that they're more or less a street grid than a crack 834 00:22:43,710 --> 00:22:43,720 more or less a street grid than a crack 835 00:22:43,720 --> 00:22:47,790 more or less a street grid than a crack just just a indentation mark as long as 836 00:22:47,790 --> 00:22:47,800 just just a indentation mark as long as 837 00:22:47,800 --> 00:22:52,890 just just a indentation mark as long as they have a very shallow depth but once 838 00:22:52,890 --> 00:22:52,900 they have a very shallow depth but once 839 00:22:52,900 --> 00:22:55,080 they have a very shallow depth but once again depends on the criticality of the 840 00:22:55,080 --> 00:22:55,090 again depends on the criticality of the 841 00:22:55,090 --> 00:22:57,510 again depends on the criticality of the installation as to how much you accept 842 00:22:57,510 --> 00:22:57,520 installation as to how much you accept 843 00:22:57,520 --> 00:23:03,390 installation as to how much you accept in the cracks here's one that shows a 844 00:23:03,390 --> 00:23:03,400 in the cracks here's one that shows a 845 00:23:03,400 --> 00:23:06,440 in the cracks here's one that shows a forging track on the top of the head and 846 00:23:06,440 --> 00:23:06,450 forging track on the top of the head and 847 00:23:06,450 --> 00:23:10,050 forging track on the top of the head and if you look at those a limits on depth 848 00:23:10,050 --> 00:23:10,060 if you look at those a limits on depth 849 00:23:10,060 --> 00:23:15,180 if you look at those a limits on depth you'll see that if you take 0.04 times 850 00:23:15,180 --> 00:23:15,190 you'll see that if you take 0.04 times 851 00:23:15,190 --> 00:23:20,430 you'll see that if you take 0.04 times the diameter or something like that for 852 00:23:20,430 --> 00:23:20,440 the diameter or something like that for 853 00:23:20,440 --> 00:23:23,460 the diameter or something like that for a bolt that is a 1/4 inch in diameter 854 00:23:23,460 --> 00:23:23,470 a bolt that is a 1/4 inch in diameter 855 00:23:23,470 --> 00:23:26,370 a bolt that is a 1/4 inch in diameter that's a pretty shallow crack it's 856 00:23:26,370 --> 00:23:26,380 that's a pretty shallow crack it's 857 00:23:26,380 --> 00:23:26,700 that's a pretty shallow crack it's enough 858 00:23:26,700 --> 00:23:26,710 enough 859 00:23:26,710 --> 00:23:29,269 enough more than a streak that you can see so 860 00:23:29,269 --> 00:23:29,279 more than a streak that you can see so 861 00:23:29,279 --> 00:23:32,789 more than a streak that you can see so so so that type of crack wouldn't so 862 00:23:32,789 --> 00:23:32,799 so so that type of crack wouldn't so 863 00:23:32,799 --> 00:23:35,220 so so that type of crack wouldn't so called crack would be acceptable now 864 00:23:35,220 --> 00:23:35,230 called crack would be acceptable now 865 00:23:35,230 --> 00:23:41,220 called crack would be acceptable now here is a fear burst and that's an open 866 00:23:41,220 --> 00:23:41,230 here is a fear burst and that's an open 867 00:23:41,230 --> 00:23:44,909 here is a fear burst and that's an open break in the in the metal from forming 868 00:23:44,909 --> 00:23:44,919 break in the in the metal from forming 869 00:23:44,919 --> 00:23:51,889 break in the in the metal from forming and you can you can accept these only if 870 00:23:51,889 --> 00:23:51,899 and you can you can accept these only if 871 00:23:51,899 --> 00:23:55,769 and you can you can accept these only if there is it's in the flats and extends 872 00:23:55,769 --> 00:23:55,779 there is it's in the flats and extends 873 00:23:55,779 --> 00:23:57,720 there is it's in the flats and extends in the crown chamfer circle at the top 874 00:23:57,720 --> 00:23:57,730 in the crown chamfer circle at the top 875 00:23:57,730 --> 00:23:59,279 in the crown chamfer circle at the top of the head or in the under head bearing 876 00:23:59,279 --> 00:23:59,289 of the head or in the under head bearing 877 00:23:59,289 --> 00:24:03,419 of the head or in the under head bearing circle and none of you located at the 878 00:24:03,419 --> 00:24:03,429 circle and none of you located at the 879 00:24:03,429 --> 00:24:05,519 circle and none of you located at the intersection of the wrenching flats that 880 00:24:05,519 --> 00:24:05,529 intersection of the wrenching flats that 881 00:24:05,529 --> 00:24:07,769 intersection of the wrenching flats that reduces the width across corners below 882 00:24:07,769 --> 00:24:07,779 reduces the width across corners below 883 00:24:07,779 --> 00:24:10,230 reduces the width across corners below its specified minimum in other words you 884 00:24:10,230 --> 00:24:10,240 its specified minimum in other words you 885 00:24:10,240 --> 00:24:15,000 its specified minimum in other words you can you can accept some of these once 886 00:24:15,000 --> 00:24:15,010 can you can accept some of these once 887 00:24:15,010 --> 00:24:18,480 can you can accept some of these once again if they are so shallow that they 888 00:24:18,480 --> 00:24:18,490 again if they are so shallow that they 889 00:24:18,490 --> 00:24:21,210 again if they are so shallow that they don't look like a crack itself but just 890 00:24:21,210 --> 00:24:21,220 don't look like a crack itself but just 891 00:24:21,220 --> 00:24:25,289 don't look like a crack itself but just beware of them because the this is one 892 00:24:25,289 --> 00:24:25,299 beware of them because the this is one 893 00:24:25,299 --> 00:24:27,570 beware of them because the this is one here and you see this is really this one 894 00:24:27,570 --> 00:24:27,580 here and you see this is really this one 895 00:24:27,580 --> 00:24:29,220 here and you see this is really this one amounts to just a little dent on the 896 00:24:29,220 --> 00:24:29,230 amounts to just a little dent on the 897 00:24:29,230 --> 00:24:31,950 amounts to just a little dent on the corner of the flat so so that would 898 00:24:31,950 --> 00:24:31,960 corner of the flat so so that would 899 00:24:31,960 --> 00:24:34,049 corner of the flat so so that would probably be acceptable as long as it did 900 00:24:34,049 --> 00:24:34,059 probably be acceptable as long as it did 901 00:24:34,059 --> 00:24:36,889 probably be acceptable as long as it did not look like a crack itself 902 00:24:36,889 --> 00:24:36,899 not look like a crack itself 903 00:24:36,899 --> 00:24:39,720 not look like a crack itself Foles that's the kind of a doubling over 904 00:24:39,720 --> 00:24:39,730 Foles that's the kind of a doubling over 905 00:24:39,730 --> 00:24:43,019 Foles that's the kind of a doubling over material which occurs during the forging 906 00:24:43,019 --> 00:24:43,029 material which occurs during the forging 907 00:24:43,029 --> 00:24:46,049 material which occurs during the forging operation and usually occurs near the 908 00:24:46,049 --> 00:24:46,059 operation and usually occurs near the 909 00:24:46,059 --> 00:24:48,919 operation and usually occurs near the intersection of diameter changes 910 00:24:48,919 --> 00:24:48,929 intersection of diameter changes 911 00:24:48,929 --> 00:24:53,570 intersection of diameter changes particularly with non circular heads and 912 00:24:53,570 --> 00:24:53,580 particularly with non circular heads and 913 00:24:53,580 --> 00:24:56,460 particularly with non circular heads and the only problem that you look at with 914 00:24:56,460 --> 00:24:56,470 the only problem that you look at with 915 00:24:56,470 --> 00:25:00,419 the only problem that you look at with that is you can allow them in some cases 916 00:25:00,419 --> 00:25:00,429 that is you can allow them in some cases 917 00:25:00,429 --> 00:25:02,430 that is you can allow them in some cases at the corners but you don't want any 918 00:25:02,430 --> 00:25:02,440 at the corners but you don't want any 919 00:25:02,440 --> 00:25:08,760 at the corners but you don't want any near the Phillip radius of the fastener 920 00:25:08,760 --> 00:25:08,770 near the Phillip radius of the fastener 921 00:25:08,770 --> 00:25:12,510 near the Phillip radius of the fastener in in this area here now here you're 922 00:25:12,510 --> 00:25:12,520 in in this area here now here you're 923 00:25:12,520 --> 00:25:15,899 in in this area here now here you're getting it because you're trying to form 924 00:25:15,899 --> 00:25:15,909 getting it because you're trying to form 925 00:25:15,909 --> 00:25:21,990 getting it because you're trying to form a round cross-section in the square so 926 00:25:21,990 --> 00:25:22,000 a round cross-section in the square so 927 00:25:22,000 --> 00:25:23,669 a round cross-section in the square so it's kind of hard to form that without 928 00:25:23,669 --> 00:25:23,679 it's kind of hard to form that without 929 00:25:23,679 --> 00:25:26,669 it's kind of hard to form that without getting some deformation and burgers 930 00:25:26,669 --> 00:25:26,679 getting some deformation and burgers 931 00:25:26,679 --> 00:25:31,350 getting some deformation and burgers around it so so once again you look to 932 00:25:31,350 --> 00:25:31,360 around it so so once again you look to 933 00:25:31,360 --> 00:25:34,110 around it so so once again you look to see where it's at and evaluate it before 934 00:25:34,110 --> 00:25:34,120 see where it's at and evaluate it before 935 00:25:34,120 --> 00:25:39,730 see where it's at and evaluate it before you accept this on a fastener 936 00:25:39,730 --> 00:25:39,740 937 00:25:39,740 --> 00:25:44,060 now seams are usually in the raw 938 00:25:44,060 --> 00:25:44,070 now seams are usually in the raw 939 00:25:44,070 --> 00:25:48,200 now seams are usually in the raw material before forming and they're 940 00:25:48,200 --> 00:25:48,210 material before forming and they're 941 00:25:48,210 --> 00:25:51,830 material before forming and they're pretty straight and see seams are 942 00:25:51,830 --> 00:25:51,840 pretty straight and see seams are 943 00:25:51,840 --> 00:25:54,380 pretty straight and see seams are acceptable because usually they're 944 00:25:54,380 --> 00:25:54,390 acceptable because usually they're 945 00:25:54,390 --> 00:25:58,010 acceptable because usually they're they're not a crack per se and they're 946 00:25:58,010 --> 00:25:58,020 they're not a crack per se and they're 947 00:25:58,020 --> 00:26:00,590 they're not a crack per se and they're they're shallow and don't have and have 948 00:26:00,590 --> 00:26:00,600 they're shallow and don't have and have 949 00:26:00,600 --> 00:26:02,930 they're shallow and don't have and have a pretty good radius now see here if you 950 00:26:02,930 --> 00:26:02,940 a pretty good radius now see here if you 951 00:26:02,940 --> 00:26:07,550 a pretty good radius now see here if you look at this it's point O three times 952 00:26:07,550 --> 00:26:07,560 look at this it's point O three times 953 00:26:07,560 --> 00:26:13,430 look at this it's point O three times the diameter so if you go with a 1/2 954 00:26:13,430 --> 00:26:13,440 the diameter so if you go with a 1/2 955 00:26:13,440 --> 00:26:15,410 the diameter so if you go with a 1/2 inch fastener you see you still have 956 00:26:15,410 --> 00:26:15,420 inch fastener you see you still have 957 00:26:15,420 --> 00:26:16,820 inch fastener you see you still have something there that you would have 958 00:26:16,820 --> 00:26:16,830 something there that you would have 959 00:26:16,830 --> 00:26:19,790 something there that you would have trouble even seeing it's so shallow so 960 00:26:19,790 --> 00:26:19,800 trouble even seeing it's so shallow so 961 00:26:19,800 --> 00:26:26,000 trouble even seeing it's so shallow so so that would be okay surface voids you 962 00:26:26,000 --> 00:26:26,010 so that would be okay surface voids you 963 00:26:26,010 --> 00:26:28,670 so that would be okay surface voids you can get this in a material due to the 964 00:26:28,670 --> 00:26:28,680 can get this in a material due to the 965 00:26:28,680 --> 00:26:33,230 can get this in a material due to the way it's formed but you got to watch if 966 00:26:33,230 --> 00:26:33,240 way it's formed but you got to watch if 967 00:26:33,240 --> 00:26:35,870 way it's formed but you got to watch if it's it indicates there's probably 968 00:26:35,870 --> 00:26:35,880 it's it indicates there's probably 969 00:26:35,880 --> 00:26:37,280 it's it indicates there's probably something wrong with the chemistry of 970 00:26:37,280 --> 00:26:37,290 something wrong with the chemistry of 971 00:26:37,290 --> 00:26:40,010 something wrong with the chemistry of the material if you're getting a lot of 972 00:26:40,010 --> 00:26:40,020 the material if you're getting a lot of 973 00:26:40,020 --> 00:26:43,550 the material if you're getting a lot of voids in the surface and once again the 974 00:26:43,550 --> 00:26:43,560 voids in the surface and once again the 975 00:26:43,560 --> 00:26:47,840 voids in the surface and once again the void depth look at the amount here that 976 00:26:47,840 --> 00:26:47,850 void depth look at the amount here that 977 00:26:47,850 --> 00:26:50,780 void depth look at the amount here that you're allowed point O two times the 978 00:26:50,780 --> 00:26:50,790 you're allowed point O two times the 979 00:26:50,790 --> 00:26:53,030 you're allowed point O two times the shank diameter that's still or ten 980 00:26:53,030 --> 00:26:53,040 shank diameter that's still or ten 981 00:26:53,040 --> 00:26:55,780 shank diameter that's still or ten thousandths all right at ten thousandths 982 00:26:55,780 --> 00:26:55,790 thousandths all right at ten thousandths 983 00:26:55,790 --> 00:26:59,600 thousandths all right at ten thousandths void is a pretty shallow one and then 984 00:26:59,600 --> 00:26:59,610 void is a pretty shallow one and then 985 00:26:59,610 --> 00:27:04,520 void is a pretty shallow one and then the this one I would look at if you had 986 00:27:04,520 --> 00:27:04,530 the this one I would look at if you had 987 00:27:04,530 --> 00:27:10,370 the this one I would look at if you had void areas that are that high a 988 00:27:10,370 --> 00:27:10,380 void areas that are that high a 989 00:27:10,380 --> 00:27:13,430 void areas that are that high a percentage of the under head bearing 990 00:27:13,430 --> 00:27:13,440 percentage of the under head bearing 991 00:27:13,440 --> 00:27:15,410 percentage of the under head bearing area I would look at the material to see 992 00:27:15,410 --> 00:27:15,420 area I would look at the material to see 993 00:27:15,420 --> 00:27:18,590 area I would look at the material to see whether I had the right material 994 00:27:18,590 --> 00:27:18,600 whether I had the right material 995 00:27:18,600 --> 00:27:20,570 whether I had the right material chemistry or not and whether I'd want to 996 00:27:20,570 --> 00:27:20,580 chemistry or not and whether I'd want to 997 00:27:20,580 --> 00:27:24,410 chemistry or not and whether I'd want to reject it on that basis now tool marks 998 00:27:24,410 --> 00:27:24,420 reject it on that basis now tool marks 999 00:27:24,420 --> 00:27:28,850 reject it on that basis now tool marks Nicks and gouges they're permitted on 1000 00:27:28,850 --> 00:27:28,860 Nicks and gouges they're permitted on 1001 00:27:28,860 --> 00:27:31,490 Nicks and gouges they're permitted on the under head surface but you notice 1002 00:27:31,490 --> 00:27:31,500 the under head surface but you notice 1003 00:27:31,500 --> 00:27:34,850 the under head surface but you notice the restriction on that astonish your 1004 00:27:34,850 --> 00:27:34,860 the restriction on that astonish your 1005 00:27:34,860 --> 00:27:39,940 the restriction on that astonish your micro inch surface roughness does not go 1006 00:27:39,940 --> 00:27:39,950 micro inch surface roughness does not go 1007 00:27:39,950 --> 00:27:44,420 micro inch surface roughness does not go under the 125 well you see a 125 is 1008 00:27:44,420 --> 00:27:44,430 under the 125 well you see a 125 is 1009 00:27:44,430 --> 00:27:48,620 under the 125 well you see a 125 is really not not too rough it's a rough 1010 00:27:48,620 --> 00:27:48,630 really not not too rough it's a rough 1011 00:27:48,630 --> 00:27:52,250 really not not too rough it's a rough machining surface and 1012 00:27:52,250 --> 00:27:52,260 machining surface and 1013 00:27:52,260 --> 00:27:54,830 machining surface and so the the other place that you would 1014 00:27:54,830 --> 00:27:54,840 so the the other place that you would 1015 00:27:54,840 --> 00:27:56,810 so the the other place that you would look at if the head is banged up a 1016 00:27:56,810 --> 00:27:56,820 look at if the head is banged up a 1017 00:27:56,820 --> 00:27:59,390 look at if the head is banged up a little bit and it's on the corners out 1018 00:27:59,390 --> 00:27:59,400 little bit and it's on the corners out 1019 00:27:59,400 --> 00:28:02,330 little bit and it's on the corners out of the way you could probably accept it 1020 00:28:02,330 --> 00:28:02,340 of the way you could probably accept it 1021 00:28:02,340 --> 00:28:05,770 of the way you could probably accept it as long as the plating surface is not 1022 00:28:05,770 --> 00:28:05,780 as long as the plating surface is not 1023 00:28:05,780 --> 00:28:10,310 as long as the plating surface is not gouged now plating inspections this is 1024 00:28:10,310 --> 00:28:10,320 gouged now plating inspections this is 1025 00:28:10,320 --> 00:28:11,780 gouged now plating inspections this is another this is another one of those 1026 00:28:11,780 --> 00:28:11,790 another this is another one of those 1027 00:28:11,790 --> 00:28:15,890 another this is another one of those that we talked about and people don't do 1028 00:28:15,890 --> 00:28:15,900 that we talked about and people don't do 1029 00:28:15,900 --> 00:28:18,730 that we talked about and people don't do other than look at it same yep that's 1030 00:28:18,730 --> 00:28:18,740 other than look at it same yep that's 1031 00:28:18,740 --> 00:28:21,440 other than look at it same yep that's that's a gold color so it means it's got 1032 00:28:21,440 --> 00:28:21,450 that's a gold color so it means it's got 1033 00:28:21,450 --> 00:28:24,380 that's a gold color so it means it's got chromate in it and don't see that it's 1034 00:28:24,380 --> 00:28:24,390 chromate in it and don't see that it's 1035 00:28:24,390 --> 00:28:28,220 chromate in it and don't see that it's got up too much so guess it's alright 1036 00:28:28,220 --> 00:28:28,230 got up too much so guess it's alright 1037 00:28:28,230 --> 00:28:31,610 got up too much so guess it's alright most of the platings we've discussed 1038 00:28:31,610 --> 00:28:31,620 most of the platings we've discussed 1039 00:28:31,620 --> 00:28:33,980 most of the platings we've discussed earlier and but we didn't discuss 1040 00:28:33,980 --> 00:28:33,990 earlier and but we didn't discuss 1041 00:28:33,990 --> 00:28:36,230 earlier and but we didn't discuss discuss anything on the inspection of 1042 00:28:36,230 --> 00:28:36,240 discuss anything on the inspection of 1043 00:28:36,240 --> 00:28:41,900 discuss anything on the inspection of them so we'll kind of limit our coverage 1044 00:28:41,900 --> 00:28:41,910 them so we'll kind of limit our coverage 1045 00:28:41,910 --> 00:28:44,000 them so we'll kind of limit our coverage here to zinc and cadmium platings 1046 00:28:44,000 --> 00:28:44,010 here to zinc and cadmium platings 1047 00:28:44,010 --> 00:28:46,460 here to zinc and cadmium platings except for just visually looking at the 1048 00:28:46,460 --> 00:28:46,470 except for just visually looking at the 1049 00:28:46,470 --> 00:28:51,890 except for just visually looking at the things and the substitution of zinc for 1050 00:28:51,890 --> 00:28:51,900 things and the substitution of zinc for 1051 00:28:51,900 --> 00:28:54,680 things and the substitution of zinc for cadmium and using a dye and amassed the 1052 00:28:54,680 --> 00:28:54,690 cadmium and using a dye and amassed the 1053 00:28:54,690 --> 00:28:59,270 cadmium and using a dye and amassed the color is a common way to cheat it's done 1054 00:28:59,270 --> 00:28:59,280 color is a common way to cheat it's done 1055 00:28:59,280 --> 00:29:04,549 color is a common way to cheat it's done off a lot and because the the chromate 1056 00:29:04,549 --> 00:29:04,559 off a lot and because the the chromate 1057 00:29:04,559 --> 00:29:08,390 off a lot and because the the chromate dye that you use usually you look at it 1058 00:29:08,390 --> 00:29:08,400 dye that you use usually you look at it 1059 00:29:08,400 --> 00:29:11,060 dye that you use usually you look at it and the fasteners are gold type color 1060 00:29:11,060 --> 00:29:11,070 and the fasteners are gold type color 1061 00:29:11,070 --> 00:29:15,020 and the fasteners are gold type color and it you can't tell by looking at it 1062 00:29:15,020 --> 00:29:15,030 and it you can't tell by looking at it 1063 00:29:15,030 --> 00:29:18,260 and it you can't tell by looking at it whether it's a zinc or cadmium so the 1064 00:29:18,260 --> 00:29:18,270 whether it's a zinc or cadmium so the 1065 00:29:18,270 --> 00:29:22,159 whether it's a zinc or cadmium so the only way to find out is actually to run 1066 00:29:22,159 --> 00:29:22,169 only way to find out is actually to run 1067 00:29:22,169 --> 00:29:26,870 only way to find out is actually to run a test now you can do two different 1068 00:29:26,870 --> 00:29:26,880 a test now you can do two different 1069 00:29:26,880 --> 00:29:31,669 a test now you can do two different things on it you can destroy the plating 1070 00:29:31,669 --> 00:29:31,679 things on it you can destroy the plating 1071 00:29:31,679 --> 00:29:33,289 things on it you can destroy the plating on a fastener and take a chunk of the 1072 00:29:33,289 --> 00:29:33,299 on a fastener and take a chunk of the 1073 00:29:33,299 --> 00:29:35,330 on a fastener and take a chunk of the plating and go put it in a scanning 1074 00:29:35,330 --> 00:29:35,340 plating and go put it in a scanning 1075 00:29:35,340 --> 00:29:38,530 plating and go put it in a scanning electron microscope and see whether it's 1076 00:29:38,530 --> 00:29:38,540 electron microscope and see whether it's 1077 00:29:38,540 --> 00:29:42,320 electron microscope and see whether it's mostly cadmium are mostly zinc but then 1078 00:29:42,320 --> 00:29:42,330 mostly cadmium are mostly zinc but then 1079 00:29:42,330 --> 00:29:43,730 mostly cadmium are mostly zinc but then there are other things that you can do 1080 00:29:43,730 --> 00:29:43,740 there are other things that you can do 1081 00:29:43,740 --> 00:29:52,690 there are other things that you can do here too then in inspecting now zinc is 1082 00:29:52,690 --> 00:29:52,700 here too then in inspecting now zinc is 1083 00:29:52,700 --> 00:29:55,010 here too then in inspecting now zinc is usually covered by ASTM 1084 00:29:55,010 --> 00:29:55,020 usually covered by ASTM 1085 00:29:55,020 --> 00:29:58,580 usually covered by ASTM B 633 and cadmium is covered by a 1086 00:29:58,580 --> 00:29:58,590 B 633 and cadmium is covered by a 1087 00:29:58,590 --> 00:30:04,789 B 633 and cadmium is covered by a federal spec uqp 416 you can do process 1088 00:30:04,789 --> 00:30:04,799 federal spec uqp 416 you can do process 1089 00:30:04,799 --> 00:30:06,080 federal spec uqp 416 you can do process control inspection 1090 00:30:06,080 --> 00:30:06,090 control inspection 1091 00:30:06,090 --> 00:30:10,130 control inspection and the plating outfits are supposed to 1092 00:30:10,130 --> 00:30:10,140 and the plating outfits are supposed to 1093 00:30:10,140 --> 00:30:12,710 and the plating outfits are supposed to do that and most of them do so that they 1094 00:30:12,710 --> 00:30:12,720 do that and most of them do so that they 1095 00:30:12,720 --> 00:30:15,560 do that and most of them do so that they control the amount of additives they put 1096 00:30:15,560 --> 00:30:15,570 control the amount of additives they put 1097 00:30:15,570 --> 00:30:17,720 control the amount of additives they put in if their bath gets tired they can add 1098 00:30:17,720 --> 00:30:17,730 in if their bath gets tired they can add 1099 00:30:17,730 --> 00:30:19,760 in if their bath gets tired they can add chemicals to it and so on and take new 1100 00:30:19,760 --> 00:30:19,770 chemicals to it and so on and take new 1101 00:30:19,770 --> 00:30:26,870 chemicals to it and so on and take new readings determine how it is plating and 1102 00:30:26,870 --> 00:30:26,880 readings determine how it is plating and 1103 00:30:26,880 --> 00:30:29,170 readings determine how it is plating and you can do a lot sampling inspection 1104 00:30:29,170 --> 00:30:29,180 you can do a lot sampling inspection 1105 00:30:29,180 --> 00:30:31,700 you can do a lot sampling inspection visual inspection and plating thickness 1106 00:30:31,700 --> 00:30:31,710 visual inspection and plating thickness 1107 00:30:31,710 --> 00:30:36,500 visual inspection and plating thickness tests there is in fact I believe a guy 1108 00:30:36,500 --> 00:30:36,510 tests there is in fact I believe a guy 1109 00:30:36,510 --> 00:30:38,360 tests there is in fact I believe a guy from here at Lewis just recently 1110 00:30:38,360 --> 00:30:38,370 from here at Lewis just recently 1111 00:30:38,370 --> 00:30:41,330 from here at Lewis just recently developed a method of inspecting the 1112 00:30:41,330 --> 00:30:41,340 developed a method of inspecting the 1113 00:30:41,340 --> 00:30:45,230 developed a method of inspecting the thickness of plating Dan Roth works over 1114 00:30:45,230 --> 00:30:45,240 thickness of plating Dan Roth works over 1115 00:30:45,240 --> 00:30:47,870 thickness of plating Dan Roth works over in M and s or the what used to be M and 1116 00:30:47,870 --> 00:30:47,880 in M and s or the what used to be M and 1117 00:30:47,880 --> 00:30:49,550 in M and s or the what used to be M and s I believe developed one but there are 1118 00:30:49,550 --> 00:30:49,560 s I believe developed one but there are 1119 00:30:49,560 --> 00:30:52,310 s I believe developed one but there are methods of looking at and I think 1120 00:30:52,310 --> 00:30:52,320 methods of looking at and I think 1121 00:30:52,320 --> 00:30:54,410 methods of looking at and I think ultrasonically measuring plating 1122 00:30:54,410 --> 00:30:54,420 ultrasonically measuring plating 1123 00:30:54,420 --> 00:30:58,820 ultrasonically measuring plating thickness on materials you can do an 1124 00:30:58,820 --> 00:30:58,830 thickness on materials you can do an 1125 00:30:58,830 --> 00:31:01,190 thickness on materials you can do an adhesion test you can do a corrosion 1126 00:31:01,190 --> 00:31:01,200 adhesion test you can do a corrosion 1127 00:31:01,200 --> 00:31:03,590 adhesion test you can do a corrosion test and you do hydrogen embrittlement 1128 00:31:03,590 --> 00:31:03,600 test and you do hydrogen embrittlement 1129 00:31:03,600 --> 00:31:06,560 test and you do hydrogen embrittlement test although the hydrogen embrittlement 1130 00:31:06,560 --> 00:31:06,570 test although the hydrogen embrittlement 1131 00:31:06,570 --> 00:31:11,060 test although the hydrogen embrittlement test you can get that with both zinc and 1132 00:31:11,060 --> 00:31:11,070 test you can get that with both zinc and 1133 00:31:11,070 --> 00:31:13,280 test you can get that with both zinc and cadmium so that in itself would not be 1134 00:31:13,280 --> 00:31:13,290 cadmium so that in itself would not be 1135 00:31:13,290 --> 00:31:17,270 cadmium so that in itself would not be conclusive the lot sampling technique 1136 00:31:17,270 --> 00:31:17,280 conclusive the lot sampling technique 1137 00:31:17,280 --> 00:31:22,430 conclusive the lot sampling technique you can take a lot of plated fasteners 1138 00:31:22,430 --> 00:31:22,440 you can take a lot of plated fasteners 1139 00:31:22,440 --> 00:31:25,760 you can take a lot of plated fasteners of the same metal composition and so on 1140 00:31:25,760 --> 00:31:25,770 of the same metal composition and so on 1141 00:31:25,770 --> 00:31:29,150 of the same metal composition and so on and take a bunch of samples out visually 1142 00:31:29,150 --> 00:31:29,160 and take a bunch of samples out visually 1143 00:31:29,160 --> 00:31:32,300 and take a bunch of samples out visually inspect them look to see if the plating 1144 00:31:32,300 --> 00:31:32,310 inspect them look to see if the plating 1145 00:31:32,310 --> 00:31:34,490 inspect them look to see if the plating is smooth and to see whether that here 1146 00:31:34,490 --> 00:31:34,500 is smooth and to see whether that here 1147 00:31:34,500 --> 00:31:36,620 is smooth and to see whether that here is properly whether it has blisters in 1148 00:31:36,620 --> 00:31:36,630 is properly whether it has blisters in 1149 00:31:36,630 --> 00:31:40,520 is properly whether it has blisters in it fits and that sort of thing and then 1150 00:31:40,520 --> 00:31:40,530 it fits and that sort of thing and then 1151 00:31:40,530 --> 00:31:42,350 it fits and that sort of thing and then you could alright you can measure them 1152 00:31:42,350 --> 00:31:42,360 you could alright you can measure them 1153 00:31:42,360 --> 00:31:44,990 you could alright you can measure them non-destructively by these various 1154 00:31:44,990 --> 00:31:45,000 non-destructively by these various 1155 00:31:45,000 --> 00:31:47,510 non-destructively by these various testers an electronic test eddy current 1156 00:31:47,510 --> 00:31:47,520 testers an electronic test eddy current 1157 00:31:47,520 --> 00:31:50,540 testers an electronic test eddy current magnetic beta radiation back scatter and 1158 00:31:50,540 --> 00:31:50,550 magnetic beta radiation back scatter and 1159 00:31:50,550 --> 00:31:52,640 magnetic beta radiation back scatter and all these things that's covered in one 1160 00:31:52,640 --> 00:31:52,650 all these things that's covered in one 1161 00:31:52,650 --> 00:31:59,440 all these things that's covered in one of the sections of the mill handbook h28 1162 00:31:59,440 --> 00:31:59,450 of the sections of the mill handbook h28 1163 00:31:59,450 --> 00:32:05,930 of the sections of the mill handbook h28 you can take plated specimens for the 1164 00:32:05,930 --> 00:32:05,940 you can take plated specimens for the 1165 00:32:05,940 --> 00:32:08,360 you can take plated specimens for the required adhesion corrosion and hydrogen 1166 00:32:08,360 --> 00:32:08,370 required adhesion corrosion and hydrogen 1167 00:32:08,370 --> 00:32:10,490 required adhesion corrosion and hydrogen embrittlement tests from a production 1168 00:32:10,490 --> 00:32:10,500 embrittlement tests from a production 1169 00:32:10,500 --> 00:32:13,550 embrittlement tests from a production lot at scheduled times you can determine 1170 00:32:13,550 --> 00:32:13,560 lot at scheduled times you can determine 1171 00:32:13,560 --> 00:32:17,899 lot at scheduled times you can determine the adhesion and this is a real 1172 00:32:17,899 --> 00:32:17,909 the adhesion and this is a real 1173 00:32:17,909 --> 00:32:19,759 the adhesion and this is a real scientific method by scraping the 1174 00:32:19,759 --> 00:32:19,769 scientific method by scraping the 1175 00:32:19,769 --> 00:32:22,969 scientific method by scraping the surface with a knife and then looking at 1176 00:32:22,969 --> 00:32:22,979 surface with a knife and then looking at 1177 00:32:22,979 --> 00:32:25,039 surface with a knife and then looking at it to see whether it is adhering 1178 00:32:25,039 --> 00:32:25,049 it to see whether it is adhering 1179 00:32:25,049 --> 00:32:27,889 it to see whether it is adhering properly with a magnifying glass that's 1180 00:32:27,889 --> 00:32:27,899 properly with a magnifying glass that's 1181 00:32:27,899 --> 00:32:30,049 properly with a magnifying glass that's a method of inspection that you can do 1182 00:32:30,049 --> 00:32:30,059 a method of inspection that you can do 1183 00:32:30,059 --> 00:32:35,769 a method of inspection that you can do yourself 1184 00:32:35,769 --> 00:32:35,779 1185 00:32:35,779 --> 00:32:38,899 now corrosion resistance is determined 1186 00:32:38,899 --> 00:32:38,909 now corrosion resistance is determined 1187 00:32:38,909 --> 00:32:42,190 now corrosion resistance is determined of course by doing your salt spray test 1188 00:32:42,190 --> 00:32:42,200 of course by doing your salt spray test 1189 00:32:42,200 --> 00:32:47,840 of course by doing your salt spray test which runs 96 hours and after the 1190 00:32:47,840 --> 00:32:47,850 which runs 96 hours and after the 1191 00:32:47,850 --> 00:32:51,139 which runs 96 hours and after the exposure the presence of corrosion 1192 00:32:51,139 --> 00:32:51,149 exposure the presence of corrosion 1193 00:32:51,149 --> 00:32:54,619 exposure the presence of corrosion products visible to the unaided eye at 1194 00:32:54,619 --> 00:32:54,629 products visible to the unaided eye at 1195 00:32:54,629 --> 00:32:56,299 products visible to the unaided eye at normal reading distance is caused by 1196 00:32:56,299 --> 00:32:56,309 normal reading distance is caused by 1197 00:32:56,309 --> 00:32:58,549 normal reading distance is caused by rejection because you should not get any 1198 00:32:58,549 --> 00:32:58,559 rejection because you should not get any 1199 00:32:58,559 --> 00:33:03,379 rejection because you should not get any rusting on it or deposition of corrosion 1200 00:33:03,379 --> 00:33:03,389 rusting on it or deposition of corrosion 1201 00:33:03,389 --> 00:33:05,810 rusting on it or deposition of corrosion products and for the 96 hours now 1202 00:33:05,810 --> 00:33:05,820 products and for the 96 hours now 1203 00:33:05,820 --> 00:33:10,279 products and for the 96 hours now hydrogen embrittlement testing this one 1204 00:33:10,279 --> 00:33:10,289 hydrogen embrittlement testing this one 1205 00:33:10,289 --> 00:33:13,099 hydrogen embrittlement testing this one is there are different schools of 1206 00:33:13,099 --> 00:33:13,109 is there are different schools of 1207 00:33:13,109 --> 00:33:15,440 is there are different schools of thought on where you should start on the 1208 00:33:15,440 --> 00:33:15,450 thought on where you should start on the 1209 00:33:15,450 --> 00:33:17,690 thought on where you should start on the hydrogen embrittlement testing some of 1210 00:33:17,690 --> 00:33:17,700 hydrogen embrittlement testing some of 1211 00:33:17,700 --> 00:33:19,969 hydrogen embrittlement testing some of the faster manufacturers of the lower 1212 00:33:19,969 --> 00:33:19,979 the faster manufacturers of the lower 1213 00:33:19,979 --> 00:33:22,849 the faster manufacturers of the lower strength fasteners say gee you don't 1214 00:33:22,849 --> 00:33:22,859 strength fasteners say gee you don't 1215 00:33:22,859 --> 00:33:24,799 strength fasteners say gee you don't have to do it on lower strength 1216 00:33:24,799 --> 00:33:24,809 have to do it on lower strength 1217 00:33:24,809 --> 00:33:26,359 have to do it on lower strength fasteners because you can't get hydrogen 1218 00:33:26,359 --> 00:33:26,369 fasteners because you can't get hydrogen 1219 00:33:26,369 --> 00:33:30,009 fasteners because you can't get hydrogen embrittlement well a guy by the name of 1220 00:33:30,009 --> 00:33:30,019 embrittlement well a guy by the name of 1221 00:33:30,019 --> 00:33:33,349 embrittlement well a guy by the name of Lou Raymond who is kind of the Guru in 1222 00:33:33,349 --> 00:33:33,359 Lou Raymond who is kind of the Guru in 1223 00:33:33,359 --> 00:33:37,519 Lou Raymond who is kind of the Guru in the US on hydrogen embrittlement ran 1224 00:33:37,519 --> 00:33:37,529 the US on hydrogen embrittlement ran 1225 00:33:37,529 --> 00:33:40,219 the US on hydrogen embrittlement ran some tests and decided that you get 1226 00:33:40,219 --> 00:33:40,229 some tests and decided that you get 1227 00:33:40,229 --> 00:33:42,200 some tests and decided that you get hydrogen embrittlement all the way down 1228 00:33:42,200 --> 00:33:42,210 hydrogen embrittlement all the way down 1229 00:33:42,210 --> 00:33:44,869 hydrogen embrittlement all the way down to about a great 5 fastener the only 1230 00:33:44,869 --> 00:33:44,879 to about a great 5 fastener the only 1231 00:33:44,879 --> 00:33:47,080 to about a great 5 fastener the only thing is it takes it longer to show up 1232 00:33:47,080 --> 00:33:47,090 thing is it takes it longer to show up 1233 00:33:47,090 --> 00:33:54,669 thing is it takes it longer to show up so in this ASTM spec it only they go 1234 00:33:54,669 --> 00:33:54,679 so in this ASTM spec it only they go 1235 00:33:54,679 --> 00:33:57,080 so in this ASTM spec it only they go anything above a hundred and forty four 1236 00:33:57,080 --> 00:33:57,090 anything above a hundred and forty four 1237 00:33:57,090 --> 00:33:58,879 anything above a hundred and forty four which means your grade eight would be 1238 00:33:58,879 --> 00:33:58,889 which means your grade eight would be 1239 00:33:58,889 --> 00:34:01,930 which means your grade eight would be the first one that you would test and 1240 00:34:01,930 --> 00:34:01,940 the first one that you would test and 1241 00:34:01,940 --> 00:34:07,849 the first one that you would test and put it at crank it up to 85% of tensile 1242 00:34:07,849 --> 00:34:07,859 put it at crank it up to 85% of tensile 1243 00:34:07,859 --> 00:34:10,099 put it at crank it up to 85% of tensile element for a minimum of a 70 to 72 1244 00:34:10,099 --> 00:34:10,109 element for a minimum of a 70 to 72 1245 00:34:10,109 --> 00:34:11,750 element for a minimum of a 70 to 72 hours and you shouldn't have heads 1246 00:34:11,750 --> 00:34:11,760 hours and you shouldn't have heads 1247 00:34:11,760 --> 00:34:14,000 hours and you shouldn't have heads popping off if you have heads popping 1248 00:34:14,000 --> 00:34:14,010 popping off if you have heads popping 1249 00:34:14,010 --> 00:34:18,609 popping off if you have heads popping off then you have hydrogen embrittlement 1250 00:34:18,609 --> 00:34:18,619 1251 00:34:18,619 --> 00:34:21,500 now the sample size and rejection 1252 00:34:21,500 --> 00:34:21,510 now the sample size and rejection 1253 00:34:21,510 --> 00:34:23,629 now the sample size and rejection criteria 1254 00:34:23,629 --> 00:34:23,639 criteria 1255 00:34:23,639 --> 00:34:25,490 criteria normally you pick a bunch of random 1256 00:34:25,490 --> 00:34:25,500 normally you pick a bunch of random 1257 00:34:25,500 --> 00:34:31,640 normally you pick a bunch of random samples out of a bin and test them and 1258 00:34:31,640 --> 00:34:31,650 1259 00:34:31,650 --> 00:34:36,110 the ASTM f 788 has a table which will 1260 00:34:36,110 --> 00:34:36,120 the ASTM f 788 has a table which will 1261 00:34:36,120 --> 00:34:39,500 the ASTM f 788 has a table which will show later that gives you the number of 1262 00:34:39,500 --> 00:34:39,510 show later that gives you the number of 1263 00:34:39,510 --> 00:34:41,360 show later that gives you the number of samples that you should take for a given 1264 00:34:41,360 --> 00:34:41,370 samples that you should take for a given 1265 00:34:41,370 --> 00:34:45,710 samples that you should take for a given production lot another one is given in 1266 00:34:45,710 --> 00:34:45,720 production lot another one is given in 1267 00:34:45,720 --> 00:34:49,250 production lot another one is given in this aunt cas qcz 1.4 1268 00:34:49,250 --> 00:34:49,260 this aunt cas qcz 1.4 1269 00:34:49,260 --> 00:34:52,370 this aunt cas qcz 1.4 which superseded mil standard one 105 1270 00:34:52,370 --> 00:34:52,380 which superseded mil standard one 105 1271 00:34:52,380 --> 00:34:55,700 which superseded mil standard one 105 and then we have aunt suspect be 1272 00:34:55,700 --> 00:34:55,710 and then we have aunt suspect be 1273 00:34:55,710 --> 00:35:00,670 and then we have aunt suspect be eighteen eighteen point one that gives 1274 00:35:00,670 --> 00:35:00,680 eighteen eighteen point one that gives 1275 00:35:00,680 --> 00:35:04,370 eighteen eighteen point one that gives some sampling techniques the basis of 1276 00:35:04,370 --> 00:35:04,380 some sampling techniques the basis of 1277 00:35:04,380 --> 00:35:08,180 some sampling techniques the basis of all of these is to randomly pick a small 1278 00:35:08,180 --> 00:35:08,190 all of these is to randomly pick a small 1279 00:35:08,190 --> 00:35:11,470 all of these is to randomly pick a small sample and any failure of the samples 1280 00:35:11,470 --> 00:35:11,480 sample and any failure of the samples 1281 00:35:11,480 --> 00:35:17,750 sample and any failure of the samples rejects the whole life here is one from 1282 00:35:17,750 --> 00:35:17,760 rejects the whole life here is one from 1283 00:35:17,760 --> 00:35:21,890 rejects the whole life here is one from ASTM f 788 which shows you the sample 1284 00:35:21,890 --> 00:35:21,900 ASTM f 788 which shows you the sample 1285 00:35:21,900 --> 00:35:24,110 ASTM f 788 which shows you the sample size that you should take for a given 1286 00:35:24,110 --> 00:35:24,120 size that you should take for a given 1287 00:35:24,120 --> 00:35:30,440 size that you should take for a given lot size and you check it for all of 1288 00:35:30,440 --> 00:35:30,450 lot size and you check it for all of 1289 00:35:30,450 --> 00:35:32,900 lot size and you check it for all of these different tests that you want to 1290 00:35:32,900 --> 00:35:32,910 these different tests that you want to 1291 00:35:32,910 --> 00:35:35,990 these different tests that you want to run and once again the amount of testing 1292 00:35:35,990 --> 00:35:36,000 run and once again the amount of testing 1293 00:35:36,000 --> 00:35:37,910 run and once again the amount of testing that you do depends on the criticality 1294 00:35:37,910 --> 00:35:37,920 that you do depends on the criticality 1295 00:35:37,920 --> 00:35:43,700 that you do depends on the criticality of the design so if you find that there 1296 00:35:43,700 --> 00:35:43,710 of the design so if you find that there 1297 00:35:43,710 --> 00:35:46,850 of the design so if you find that there okay you can proceed and accept the 1298 00:35:46,850 --> 00:35:46,860 okay you can proceed and accept the 1299 00:35:46,860 --> 00:35:49,550 okay you can proceed and accept the quantity of fasteners that you have if 1300 00:35:49,550 --> 00:35:49,560 quantity of fasteners that you have if 1301 00:35:49,560 --> 00:35:51,770 quantity of fasteners that you have if you find problems and you could go ahead 1302 00:35:51,770 --> 00:35:51,780 you find problems and you could go ahead 1303 00:35:51,780 --> 00:35:54,460 you find problems and you could go ahead and insist on more testing to verify 1304 00:35:54,460 --> 00:35:54,470 and insist on more testing to verify 1305 00:35:54,470 --> 00:35:57,380 and insist on more testing to verify that it's not as serious as it appears 1306 00:35:57,380 --> 00:35:57,390 that it's not as serious as it appears 1307 00:35:57,390 --> 00:36:01,510 that it's not as serious as it appears on the surface now for macroscopic 1308 00:36:01,510 --> 00:36:01,520 on the surface now for macroscopic 1309 00:36:01,520 --> 00:36:03,650 on the surface now for macroscopic examination of predix with seam 1310 00:36:03,650 --> 00:36:03,660 examination of predix with seam 1311 00:36:03,660 --> 00:36:07,780 examination of predix with seam indications here is a sample table from 1312 00:36:07,780 --> 00:36:07,790 indications here is a sample table from 1313 00:36:07,790 --> 00:36:13,760 indications here is a sample table from ASTM f 788 and you can take them a look 1314 00:36:13,760 --> 00:36:13,770 ASTM f 788 and you can take them a look 1315 00:36:13,770 --> 00:36:15,770 ASTM f 788 and you can take them a look at them according to this sampling 1316 00:36:15,770 --> 00:36:15,780 at them according to this sampling 1317 00:36:15,780 --> 00:36:19,880 at them according to this sampling technique and if they are not judged 1318 00:36:19,880 --> 00:36:19,890 technique and if they are not judged 1319 00:36:19,890 --> 00:36:24,410 technique and if they are not judged acceptable then you can either conduct 1320 00:36:24,410 --> 00:36:24,420 acceptable then you can either conduct 1321 00:36:24,420 --> 00:36:31,240 acceptable then you can either conduct more tests or reject the entire lab 1322 00:36:31,240 --> 00:36:31,250 1323 00:36:31,250 --> 00:36:34,609 there's been a lot of talk on the lot 1324 00:36:34,609 --> 00:36:34,619 there's been a lot of talk on the lot 1325 00:36:34,619 --> 00:36:37,329 there's been a lot of talk on the lot traceability and commingling and 1326 00:36:37,329 --> 00:36:37,339 traceability and commingling and 1327 00:36:37,339 --> 00:36:40,099 traceability and commingling and certifications and so on 1328 00:36:40,099 --> 00:36:40,109 certifications and so on 1329 00:36:40,109 --> 00:36:42,440 certifications and so on concerning the fastener quality act 1330 00:36:42,440 --> 00:36:42,450 concerning the fastener quality act 1331 00:36:42,450 --> 00:36:45,309 concerning the fastener quality act which is also known as public law 101 1332 00:36:45,309 --> 00:36:45,319 which is also known as public law 101 1333 00:36:45,319 --> 00:36:51,589 which is also known as public law 101 amended its 101 592 as amended by 104 - 1334 00:36:51,589 --> 00:36:51,599 amended its 101 592 as amended by 104 - 1335 00:36:51,599 --> 00:36:54,559 amended its 101 592 as amended by 104 - 113 and of course one of the things that 1336 00:36:54,559 --> 00:36:54,569 113 and of course one of the things that 1337 00:36:54,569 --> 00:36:56,660 113 and of course one of the things that is covered in that law is lot 1338 00:36:56,660 --> 00:36:56,670 is covered in that law is lot 1339 00:36:56,670 --> 00:37:00,410 is covered in that law is lot traceability of fasteners the customer 1340 00:37:00,410 --> 00:37:00,420 traceability of fasteners the customer 1341 00:37:00,420 --> 00:37:02,569 traceability of fasteners the customer can ask for the steel manufacturers name 1342 00:37:02,569 --> 00:37:02,579 can ask for the steel manufacturers name 1343 00:37:02,579 --> 00:37:05,540 can ask for the steel manufacturers name the lot number chemical analysis of the 1344 00:37:05,540 --> 00:37:05,550 the lot number chemical analysis of the 1345 00:37:05,550 --> 00:37:07,400 the lot number chemical analysis of the wire from the which the fasteners were 1346 00:37:07,400 --> 00:37:07,410 wire from the which the fasteners were 1347 00:37:07,410 --> 00:37:10,520 wire from the which the fasteners were made and of course from domestic 1348 00:37:10,520 --> 00:37:10,530 made and of course from domestic 1349 00:37:10,530 --> 00:37:13,099 made and of course from domestic suppliers this information is readily 1350 00:37:13,099 --> 00:37:13,109 suppliers this information is readily 1351 00:37:13,109 --> 00:37:16,010 suppliers this information is readily available because most companies when 1352 00:37:16,010 --> 00:37:16,020 available because most companies when 1353 00:37:16,020 --> 00:37:18,920 available because most companies when they make fasteners they get a bill of 1354 00:37:18,920 --> 00:37:18,930 they make fasteners they get a bill of 1355 00:37:18,930 --> 00:37:21,890 they make fasteners they get a bill of lading with the coil material that gives 1356 00:37:21,890 --> 00:37:21,900 lading with the coil material that gives 1357 00:37:21,900 --> 00:37:24,770 lading with the coil material that gives all this information on it and but on 1358 00:37:24,770 --> 00:37:24,780 all this information on it and but on 1359 00:37:24,780 --> 00:37:27,380 all this information on it and but on imported fasteners then it's a bit of a 1360 00:37:27,380 --> 00:37:27,390 imported fasteners then it's a bit of a 1361 00:37:27,390 --> 00:37:29,270 imported fasteners then it's a bit of a problem to get it because you have to 1362 00:37:29,270 --> 00:37:29,280 problem to get it because you have to 1363 00:37:29,280 --> 00:37:32,870 problem to get it because you have to get the certification from the person 1364 00:37:32,870 --> 00:37:32,880 get the certification from the person 1365 00:37:32,880 --> 00:37:36,740 get the certification from the person who made it in the foreign country now 1366 00:37:36,740 --> 00:37:36,750 who made it in the foreign country now 1367 00:37:36,750 --> 00:37:39,890 who made it in the foreign country now on co-mingling this is something that's 1368 00:37:39,890 --> 00:37:39,900 on co-mingling this is something that's 1369 00:37:39,900 --> 00:37:44,420 on co-mingling this is something that's kind of a new word but what it is in the 1370 00:37:44,420 --> 00:37:44,430 kind of a new word but what it is in the 1371 00:37:44,430 --> 00:37:48,970 kind of a new word but what it is in the past the fastener distributors would get 1372 00:37:48,970 --> 00:37:48,980 past the fastener distributors would get 1373 00:37:48,980 --> 00:37:51,470 past the fastener distributors would get fasteners from all different suppliers 1374 00:37:51,470 --> 00:37:51,480 fasteners from all different suppliers 1375 00:37:51,480 --> 00:37:55,370 fasteners from all different suppliers put them together in a barrel and when 1376 00:37:55,370 --> 00:37:55,380 put them together in a barrel and when 1377 00:37:55,380 --> 00:37:57,109 put them together in a barrel and when someone ordered some they get a bunch 1378 00:37:57,109 --> 00:37:57,119 someone ordered some they get a bunch 1379 00:37:57,119 --> 00:37:59,150 someone ordered some they get a bunch out of the barrel so you it would be 1380 00:37:59,150 --> 00:37:59,160 out of the barrel so you it would be 1381 00:37:59,160 --> 00:38:01,280 out of the barrel so you it would be theoretically possible for you to get a 1382 00:38:01,280 --> 00:38:01,290 theoretically possible for you to get a 1383 00:38:01,290 --> 00:38:04,520 theoretically possible for you to get a hundred fasteners made by 25 or 30 1384 00:38:04,520 --> 00:38:04,530 hundred fasteners made by 25 or 30 1385 00:38:04,530 --> 00:38:08,420 hundred fasteners made by 25 or 30 different manufacturers under this this 1386 00:38:08,420 --> 00:38:08,430 different manufacturers under this this 1387 00:38:08,430 --> 00:38:13,309 different manufacturers under this this part of the law the commingling would be 1388 00:38:13,309 --> 00:38:13,319 part of the law the commingling would be 1389 00:38:13,319 --> 00:38:15,559 part of the law the commingling would be cut way down to where you can only have 1390 00:38:15,559 --> 00:38:15,569 cut way down to where you can only have 1391 00:38:15,569 --> 00:38:18,559 cut way down to where you can only have the fasteners from two different 1392 00:38:18,559 --> 00:38:18,569 the fasteners from two different 1393 00:38:18,569 --> 00:38:20,809 the fasteners from two different manufacturers in the same lot because 1394 00:38:20,809 --> 00:38:20,819 manufacturers in the same lot because 1395 00:38:20,819 --> 00:38:23,359 manufacturers in the same lot because each each manufacturer must register his 1396 00:38:23,359 --> 00:38:23,369 each each manufacturer must register his 1397 00:38:23,369 --> 00:38:26,390 each each manufacturer must register his trademark with asme then he has a stamp 1398 00:38:26,390 --> 00:38:26,400 trademark with asme then he has a stamp 1399 00:38:26,400 --> 00:38:28,130 trademark with asme then he has a stamp his trademark on all the fasteners 1400 00:38:28,130 --> 00:38:28,140 his trademark on all the fasteners 1401 00:38:28,140 --> 00:38:31,190 his trademark on all the fasteners covered by the law now the the minimum 1402 00:38:31,190 --> 00:38:31,200 covered by the law now the the minimum 1403 00:38:31,200 --> 00:38:34,609 covered by the law now the the minimum size is covered are quarter inch in the 1404 00:38:34,609 --> 00:38:34,619 size is covered are quarter inch in the 1405 00:38:34,619 --> 00:38:36,730 size is covered are quarter inch in the inch system and five millimeter 1406 00:38:36,730 --> 00:38:36,740 inch system and five millimeter 1407 00:38:36,740 --> 00:38:40,970 inch system and five millimeter diameters in the metric of course that 1408 00:38:40,970 --> 00:38:40,980 diameters in the metric of course that 1409 00:38:40,980 --> 00:38:43,609 diameters in the metric of course that is not altogether true - because if the 1410 00:38:43,609 --> 00:38:43,619 is not altogether true - because if the 1411 00:38:43,619 --> 00:38:44,690 is not altogether true - because if the fastener is three 1412 00:38:44,690 --> 00:38:44,700 fastener is three 1413 00:38:44,700 --> 00:38:47,030 fastener is three hardened in other words if it's a 1414 00:38:47,030 --> 00:38:47,040 hardened in other words if it's a 1415 00:38:47,040 --> 00:38:48,950 hardened in other words if it's a heat-treated fastener then smaller sizes 1416 00:38:48,950 --> 00:38:48,960 heat-treated fastener then smaller sizes 1417 00:38:48,960 --> 00:38:51,440 heat-treated fastener then smaller sizes are covered but nearly all the small 1418 00:38:51,440 --> 00:38:51,450 are covered but nearly all the small 1419 00:38:51,450 --> 00:38:54,500 are covered but nearly all the small sizes are excluded from the law because 1420 00:38:54,500 --> 00:38:54,510 sizes are excluded from the law because 1421 00:38:54,510 --> 00:38:56,300 sizes are excluded from the law because they're not heat treated that much 1422 00:38:56,300 --> 00:38:56,310 they're not heat treated that much 1423 00:38:56,310 --> 00:38:58,760 they're not heat treated that much now if the fasteners haven't been 1424 00:38:58,760 --> 00:38:58,770 now if the fasteners haven't been 1425 00:38:58,770 --> 00:39:01,370 now if the fasteners haven't been exempted they're now restricted by this 1426 00:39:01,370 --> 00:39:01,380 exempted they're now restricted by this 1427 00:39:01,380 --> 00:39:05,540 exempted they're now restricted by this commingling rule and of course you can't 1428 00:39:05,540 --> 00:39:05,550 commingling rule and of course you can't 1429 00:39:05,550 --> 00:39:07,490 commingling rule and of course you can't have more than two locks in the same 1430 00:39:07,490 --> 00:39:07,500 have more than two locks in the same 1431 00:39:07,500 --> 00:39:10,490 have more than two locks in the same container at least this way you have a 1432 00:39:10,490 --> 00:39:10,500 container at least this way you have a 1433 00:39:10,500 --> 00:39:13,220 container at least this way you have a better idea of who the manufacturer was 1434 00:39:13,220 --> 00:39:13,230 better idea of who the manufacturer was 1435 00:39:13,230 --> 00:39:15,109 better idea of who the manufacturer was on your lot of fasteners that you're 1436 00:39:15,109 --> 00:39:15,119 on your lot of fasteners that you're 1437 00:39:15,119 --> 00:39:22,400 on your lot of fasteners that you're getting for your usage a customer can 1438 00:39:22,400 --> 00:39:22,410 getting for your usage a customer can 1439 00:39:22,410 --> 00:39:25,430 getting for your usage a customer can demand certifications such as the 1440 00:39:25,430 --> 00:39:25,440 demand certifications such as the 1441 00:39:25,440 --> 00:39:27,650 demand certifications such as the material lot numbers chemical analysis 1442 00:39:27,650 --> 00:39:27,660 material lot numbers chemical analysis 1443 00:39:27,660 --> 00:39:31,000 material lot numbers chemical analysis reports in tensile test data and this 1444 00:39:31,000 --> 00:39:31,010 reports in tensile test data and this 1445 00:39:31,010 --> 00:39:36,020 reports in tensile test data and this documentation is notarized and legally 1446 00:39:36,020 --> 00:39:36,030 documentation is notarized and legally 1447 00:39:36,030 --> 00:39:39,079 documentation is notarized and legally binding on the suppliers part now in the 1448 00:39:39,079 --> 00:39:39,089 binding on the suppliers part now in the 1449 00:39:39,089 --> 00:39:41,240 binding on the suppliers part now in the past we could get certifications with 1450 00:39:41,240 --> 00:39:41,250 past we could get certifications with 1451 00:39:41,250 --> 00:39:46,339 past we could get certifications with fasteners but they normally were a sheet 1452 00:39:46,339 --> 00:39:46,349 fasteners but they normally were a sheet 1453 00:39:46,349 --> 00:39:48,130 fasteners but they normally were a sheet that the clerk who filled the order 1454 00:39:48,130 --> 00:39:48,140 that the clerk who filled the order 1455 00:39:48,140 --> 00:39:51,710 that the clerk who filled the order initialed and said these are certified 1456 00:39:51,710 --> 00:39:51,720 initialed and said these are certified 1457 00:39:51,720 --> 00:39:54,109 initialed and said these are certified to be good and that was it and so nobody 1458 00:39:54,109 --> 00:39:54,119 to be good and that was it and so nobody 1459 00:39:54,119 --> 00:39:58,430 to be good and that was it and so nobody was legally responsible so if it is done 1460 00:39:58,430 --> 00:39:58,440 was legally responsible so if it is done 1461 00:39:58,440 --> 00:40:01,490 was legally responsible so if it is done this way with the certification then the 1462 00:40:01,490 --> 00:40:01,500 this way with the certification then the 1463 00:40:01,500 --> 00:40:04,370 this way with the certification then the supplier is legally responsible for the 1464 00:40:04,370 --> 00:40:04,380 supplier is legally responsible for the 1465 00:40:04,380 --> 00:40:08,780 supplier is legally responsible for the fastener so one of the gimmicks that 1466 00:40:08,780 --> 00:40:08,790 fastener so one of the gimmicks that 1467 00:40:08,790 --> 00:40:10,700 fastener so one of the gimmicks that some of the distributors distributors 1468 00:40:10,700 --> 00:40:10,710 some of the distributors distributors 1469 00:40:10,710 --> 00:40:13,940 some of the distributors distributors are using is they're saying okay you 1470 00:40:13,940 --> 00:40:13,950 are using is they're saying okay you 1471 00:40:13,950 --> 00:40:16,160 are using is they're saying okay you want certified fasteners it'll cost you 1472 00:40:16,160 --> 00:40:16,170 want certified fasteners it'll cost you 1473 00:40:16,170 --> 00:40:17,900 want certified fasteners it'll cost you three times as much for certified 1474 00:40:17,900 --> 00:40:17,910 three times as much for certified 1475 00:40:17,910 --> 00:40:18,800 three times as much for certified fasteners 1476 00:40:18,800 --> 00:40:18,810 fasteners 1477 00:40:18,810 --> 00:40:21,260 fasteners that's uncertified fasteners now do you 1478 00:40:21,260 --> 00:40:21,270 that's uncertified fasteners now do you 1479 00:40:21,270 --> 00:40:25,190 that's uncertified fasteners now do you really want certified fasteners so so 1480 00:40:25,190 --> 00:40:25,200 really want certified fasteners so so 1481 00:40:25,200 --> 00:40:28,640 really want certified fasteners so so that's one of the loopholes if the 1482 00:40:28,640 --> 00:40:28,650 that's one of the loopholes if the 1483 00:40:28,650 --> 00:40:32,109 that's one of the loopholes if the distributor is not required to provide 1484 00:40:32,109 --> 00:40:32,119 distributor is not required to provide 1485 00:40:32,119 --> 00:40:34,250 distributor is not required to provide certifications he's not responsible for 1486 00:40:34,250 --> 00:40:34,260 certifications he's not responsible for 1487 00:40:34,260 --> 00:40:38,240 certifications he's not responsible for fasteners anymore the other thing that 1488 00:40:38,240 --> 00:40:38,250 fasteners anymore the other thing that 1489 00:40:38,250 --> 00:40:42,230 fasteners anymore the other thing that is in that law which is a real big 1490 00:40:42,230 --> 00:40:42,240 is in that law which is a real big 1491 00:40:42,240 --> 00:40:48,410 is in that law which is a real big loophole is agreement between customer 1492 00:40:48,410 --> 00:40:48,420 loophole is agreement between customer 1493 00:40:48,420 --> 00:40:53,030 loophole is agreement between customer and manufacturer now if the customer is 1494 00:40:53,030 --> 00:40:53,040 and manufacturer now if the customer is 1495 00:40:53,040 --> 00:40:55,069 and manufacturer now if the customer is a clerk who knows nothing about 1496 00:40:55,069 --> 00:40:55,079 a clerk who knows nothing about 1497 00:40:55,079 --> 00:40:58,550 a clerk who knows nothing about fasteners they can make all sorts of 1498 00:40:58,550 --> 00:40:58,560 fasteners they can make all sorts of 1499 00:40:58,560 --> 00:41:00,110 fasteners they can make all sorts of agreement with the manufacturer without 1500 00:41:00,110 --> 00:41:00,120 agreement with the manufacturer without 1501 00:41:00,120 --> 00:41:03,140 agreement with the manufacturer without even knowing it so that so in other 1502 00:41:03,140 --> 00:41:03,150 even knowing it so that so in other 1503 00:41:03,150 --> 00:41:07,700 even knowing it so that so in other words it's don't-ask don't-tell type 1504 00:41:07,700 --> 00:41:07,710 words it's don't-ask don't-tell type 1505 00:41:07,710 --> 00:41:10,400 words it's don't-ask don't-tell type thing with these fastener certifications 1506 00:41:10,400 --> 00:41:10,410 thing with these fastener certifications 1507 00:41:10,410 --> 00:41:12,800 thing with these fastener certifications if you don't ask for them and insist 1508 00:41:12,800 --> 00:41:12,810 if you don't ask for them and insist 1509 00:41:12,810 --> 00:41:14,780 if you don't ask for them and insist that you get them and pay the surcharge 1510 00:41:14,780 --> 00:41:14,790 that you get them and pay the surcharge 1511 00:41:14,790 --> 00:41:16,880 that you get them and pay the surcharge forgetting them you're not going to get 1512 00:41:16,880 --> 00:41:16,890 forgetting them you're not going to get 1513 00:41:16,890 --> 00:41:25,580 forgetting them you're not going to get them so that's where the fastener 1514 00:41:25,580 --> 00:41:25,590 them so that's where the fastener 1515 00:41:25,590 --> 00:41:30,800 them so that's where the fastener quality act stands and I am although a 1516 00:41:30,800 --> 00:41:30,810 quality act stands and I am although a 1517 00:41:30,810 --> 00:41:33,410 quality act stands and I am although a lot of fastener manufacturers are scared 1518 00:41:33,410 --> 00:41:33,420 lot of fastener manufacturers are scared 1519 00:41:33,420 --> 00:41:35,330 lot of fastener manufacturers are scared and a lot of companies are scared on it 1520 00:41:35,330 --> 00:41:35,340 and a lot of companies are scared on it 1521 00:41:35,340 --> 00:41:38,930 and a lot of companies are scared on it I don't honestly think myself that it's 1522 00:41:38,930 --> 00:41:38,940 I don't honestly think myself that it's 1523 00:41:38,940 --> 00:41:40,490 I don't honestly think myself that it's going to amount to that much in the long 1524 00:41:40,490 --> 00:41:40,500 going to amount to that much in the long 1525 00:41:40,500 --> 00:41:46,970 going to amount to that much in the long run it is being handled by NIST and of 1526 00:41:46,970 --> 00:41:46,980 run it is being handled by NIST and of 1527 00:41:46,980 --> 00:41:50,480 run it is being handled by NIST and of course the the government will enforce 1528 00:41:50,480 --> 00:41:50,490 course the the government will enforce 1529 00:41:50,490 --> 00:41:53,360 course the the government will enforce the laws how much they enforce them 1530 00:41:53,360 --> 00:41:53,370 the laws how much they enforce them 1531 00:41:53,370 --> 00:41:57,530 the laws how much they enforce them nobody knows yet I went to the school 1532 00:41:57,530 --> 00:41:57,540 nobody knows yet I went to the school 1533 00:41:57,540 --> 00:42:00,680 nobody knows yet I went to the school that they taught on how it would be 1534 00:42:00,680 --> 00:42:00,690 that they taught on how it would be 1535 00:42:00,690 --> 00:42:02,360 that they taught on how it would be implemented it's something like a 1536 00:42:02,360 --> 00:42:02,370 implemented it's something like a 1537 00:42:02,370 --> 00:42:05,420 implemented it's something like a hundred page document even the lawyers 1538 00:42:05,420 --> 00:42:05,430 hundred page document even the lawyers 1539 00:42:05,430 --> 00:42:07,730 hundred page document even the lawyers can't agree on how it should be 1540 00:42:07,730 --> 00:42:07,740 can't agree on how it should be 1541 00:42:07,740 --> 00:42:11,480 can't agree on how it should be interpreted so they'll probably ask for 1542 00:42:11,480 --> 00:42:11,490 interpreted so they'll probably ask for 1543 00:42:11,490 --> 00:42:16,610 interpreted so they'll probably ask for another delay in 98 now as far as 1544 00:42:16,610 --> 00:42:16,620 another delay in 98 now as far as 1545 00:42:16,620 --> 00:42:19,820 another delay in 98 now as far as inspection and test standards there are 1546 00:42:19,820 --> 00:42:19,830 inspection and test standards there are 1547 00:42:19,830 --> 00:42:23,030 inspection and test standards there are all kinds of specifications for testing 1548 00:42:23,030 --> 00:42:23,040 all kinds of specifications for testing 1549 00:42:23,040 --> 00:42:25,490 all kinds of specifications for testing inspection methods and what we have done 1550 00:42:25,490 --> 00:42:25,500 inspection methods and what we have done 1551 00:42:25,500 --> 00:42:30,050 inspection methods and what we have done is listed as many of those as we can in 1552 00:42:30,050 --> 00:42:30,060 is listed as many of those as we can in 1553 00:42:30,060 --> 00:42:33,470 is listed as many of those as we can in the appendices we also have general 1554 00:42:33,470 --> 00:42:33,480 the appendices we also have general 1555 00:42:33,480 --> 00:42:35,870 the appendices we also have general references in the appendices for where 1556 00:42:35,870 --> 00:42:35,880 references in the appendices for where 1557 00:42:35,880 --> 00:42:38,030 references in the appendices for where some of this material came from and 1558 00:42:38,030 --> 00:42:38,040 some of this material came from and 1559 00:42:38,040 --> 00:42:40,280 some of this material came from and additional references in case you'd want 1560 00:42:40,280 --> 00:42:40,290 additional references in case you'd want 1561 00:42:40,290 --> 00:42:44,000 additional references in case you'd want to check further since so many fastener 1562 00:42:44,000 --> 00:42:44,010 to check further since so many fastener 1563 00:42:44,010 --> 00:42:47,350 to check further since so many fastener tests are done per mil standard 13 12 1564 00:42:47,350 --> 00:42:47,360 tests are done per mil standard 13 12 1565 00:42:47,360 --> 00:42:50,390 tests are done per mil standard 13 12 will give a summary of its contents here 1566 00:42:50,390 --> 00:42:50,400 will give a summary of its contents here 1567 00:42:50,400 --> 00:42:57,230 will give a summary of its contents here just kind of go over it it establishes 1568 00:42:57,230 --> 00:42:57,240 just kind of go over it it establishes 1569 00:42:57,240 --> 00:42:59,600 just kind of go over it it establishes standard methods for testing fasteners 1570 00:42:59,600 --> 00:42:59,610 standard methods for testing fasteners 1571 00:42:59,610 --> 00:43:04,100 standard methods for testing fasteners in both the metric and the inch pound 1572 00:43:04,100 --> 00:43:04,110 in both the metric and the inch pound 1573 00:43:04,110 --> 00:43:07,450 in both the metric and the inch pound system and the standard test methods 1574 00:43:07,450 --> 00:43:07,460 system and the standard test methods 1575 00:43:07,460 --> 00:43:11,660 system and the standard test methods yield data and design allowables 1576 00:43:11,660 --> 00:43:11,670 yield data and design allowables 1577 00:43:11,670 --> 00:43:14,539 yield data and design allowables that are safe to use in fact mil 1578 00:43:14,539 --> 00:43:14,549 that are safe to use in fact mil 1579 00:43:14,549 --> 00:43:18,859 that are safe to use in fact mil handbook five uses mil standard 1312 for 1580 00:43:18,859 --> 00:43:18,869 handbook five uses mil standard 1312 for 1581 00:43:18,869 --> 00:43:21,559 handbook five uses mil standard 1312 for running their tests on both materials 1582 00:43:21,559 --> 00:43:21,569 running their tests on both materials 1583 00:43:21,569 --> 00:43:24,170 running their tests on both materials and fasteners that they publish in the 1584 00:43:24,170 --> 00:43:24,180 and fasteners that they publish in the 1585 00:43:24,180 --> 00:43:26,660 and fasteners that they publish in the book and also fastener allowables in the 1586 00:43:26,660 --> 00:43:26,670 book and also fastener allowables in the 1587 00:43:26,670 --> 00:43:32,559 book and also fastener allowables in the joint section of mil handbook by the 1588 00:43:32,559 --> 00:43:32,569 1589 00:43:32,569 --> 00:43:37,280 each test has a standard method spelled 1590 00:43:37,280 --> 00:43:37,290 each test has a standard method spelled 1591 00:43:37,290 --> 00:43:42,289 each test has a standard method spelled out and each and if their book forms for 1592 00:43:42,289 --> 00:43:42,299 out and each and if their book forms for 1593 00:43:42,299 --> 00:43:44,870 out and each and if their book forms for each one of them so you have a - - 1594 00:43:44,870 --> 00:43:44,880 each one of them so you have a - - 1595 00:43:44,880 --> 00:43:48,910 each one of them so you have a - - number for it that gives you a 1596 00:43:48,910 --> 00:43:48,920 number for it that gives you a 1597 00:43:48,920 --> 00:43:52,339 number for it that gives you a standalone document if you will so if 1598 00:43:52,339 --> 00:43:52,349 standalone document if you will so if 1599 00:43:52,349 --> 00:43:56,900 standalone document if you will so if you turn over to the next page here are 1600 00:43:56,900 --> 00:43:56,910 you turn over to the next page here are 1601 00:43:56,910 --> 00:43:59,000 you turn over to the next page here are the different categories the salt spray 1602 00:43:59,000 --> 00:43:59,010 the different categories the salt spray 1603 00:43:59,010 --> 00:44:01,010 the different categories the salt spray test that we've covered the interaction 1604 00:44:01,010 --> 00:44:01,020 test that we've covered the interaction 1605 00:44:01,020 --> 00:44:04,280 test that we've covered the interaction tests humidity lap shear test stress 1606 00:44:04,280 --> 00:44:04,290 tests humidity lap shear test stress 1607 00:44:04,290 --> 00:44:06,890 tests humidity lap shear test stress durability hardness testing tensile 1608 00:44:06,890 --> 00:44:06,900 durability hardness testing tensile 1609 00:44:06,900 --> 00:44:10,030 durability hardness testing tensile strength stress corrosion stress rupture 1610 00:44:10,030 --> 00:44:10,040 strength stress corrosion stress rupture 1611 00:44:10,040 --> 00:44:13,069 strength stress corrosion stress rupture fatigue the thickness of metallic 1612 00:44:13,069 --> 00:44:13,079 fatigue the thickness of metallic 1613 00:44:13,079 --> 00:44:20,539 fatigue the thickness of metallic coatings and doubles your testing and on 1614 00:44:20,539 --> 00:44:20,549 coatings and doubles your testing and on 1615 00:44:20,549 --> 00:44:25,030 coatings and doubles your testing and on the then we go to torque tension 1616 00:44:25,030 --> 00:44:25,040 the then we go to torque tension 1617 00:44:25,040 --> 00:44:28,670 the then we go to torque tension clamping forces for installed or 1618 00:44:28,670 --> 00:44:28,680 clamping forces for installed or 1619 00:44:28,680 --> 00:44:30,349 clamping forces for installed or installation for fasteners stress 1620 00:44:30,349 --> 00:44:30,359 installation for fasteners stress 1621 00:44:30,359 --> 00:44:33,589 installation for fasteners stress relaxation elevated temperature tensile 1622 00:44:33,589 --> 00:44:33,599 relaxation elevated temperature tensile 1623 00:44:33,599 --> 00:44:37,250 relaxation elevated temperature tensile tests sealing single shear sure joint 1624 00:44:37,250 --> 00:44:37,260 tests sealing single shear sure joint 1625 00:44:37,260 --> 00:44:41,180 tests sealing single shear sure joint fatigue receptacle push out panel 1626 00:44:41,180 --> 00:44:41,190 fatigue receptacle push out panel 1627 00:44:41,190 --> 00:44:44,299 fatigue receptacle push out panel fasteners for electrical tensile 1628 00:44:44,299 --> 00:44:44,309 fasteners for electrical tensile 1629 00:44:44,309 --> 00:44:46,490 fasteners for electrical tensile strength - panel fasteners and and 1630 00:44:46,490 --> 00:44:46,500 strength - panel fasteners and and 1631 00:44:46,500 --> 00:44:53,750 strength - panel fasteners and and receptacle torque out fasteners then you 1632 00:44:53,750 --> 00:44:53,760 receptacle torque out fasteners then you 1633 00:44:53,760 --> 00:44:56,930 receptacle torque out fasteners then you have grabbing recessed torque for a 1634 00:44:56,930 --> 00:44:56,940 have grabbing recessed torque for a 1635 00:44:56,940 --> 00:44:59,539 have grabbing recessed torque for a quality conformance test structural 1636 00:44:59,539 --> 00:44:59,549 quality conformance test structural 1637 00:44:59,549 --> 00:45:03,829 quality conformance test structural panel lap shear sheet pull up now this 1638 00:45:03,829 --> 00:45:03,839 panel lap shear sheet pull up now this 1639 00:45:03,839 --> 00:45:06,589 panel lap shear sheet pull up now this is something that is important and some 1640 00:45:06,589 --> 00:45:06,599 is something that is important and some 1641 00:45:06,599 --> 00:45:11,930 is something that is important and some of the cherry rivet type manufacturers 1642 00:45:11,930 --> 00:45:11,940 of the cherry rivet type manufacturers 1643 00:45:11,940 --> 00:45:14,390 of the cherry rivet type manufacturers the pulls damn tape rivet manufacturers 1644 00:45:14,390 --> 00:45:14,400 the pulls damn tape rivet manufacturers 1645 00:45:14,400 --> 00:45:19,940 the pulls damn tape rivet manufacturers have had trouble meeting the this sheet 1646 00:45:19,940 --> 00:45:19,950 have had trouble meeting the this sheet 1647 00:45:19,950 --> 00:45:22,670 have had trouble meeting the this sheet pull up because if you have several 1648 00:45:22,670 --> 00:45:22,680 pull up because if you have several 1649 00:45:22,680 --> 00:45:25,570 pull up because if you have several sheets together maybe they're not 1650 00:45:25,570 --> 00:45:25,580 sheets together maybe they're not 1651 00:45:25,580 --> 00:45:29,690 sheets together maybe they're not exactly flat and you try to pull them up 1652 00:45:29,690 --> 00:45:29,700 exactly flat and you try to pull them up 1653 00:45:29,700 --> 00:45:32,480 exactly flat and you try to pull them up and clinched the rivet sometimes you 1654 00:45:32,480 --> 00:45:32,490 and clinched the rivet sometimes you 1655 00:45:32,490 --> 00:45:34,730 and clinched the rivet sometimes you have trouble passing this test with 1656 00:45:34,730 --> 00:45:34,740 have trouble passing this test with 1657 00:45:34,740 --> 00:45:37,700 have trouble passing this test with these pull stem rivets so a lot of the 1658 00:45:37,700 --> 00:45:37,710 these pull stem rivets so a lot of the 1659 00:45:37,710 --> 00:45:40,100 these pull stem rivets so a lot of the manufacturers have had to go back and 1660 00:45:40,100 --> 00:45:40,110 manufacturers have had to go back and 1661 00:45:40,110 --> 00:45:42,200 manufacturers have had to go back and revise things to get a little more pull 1662 00:45:42,200 --> 00:45:42,210 revise things to get a little more pull 1663 00:45:42,210 --> 00:45:44,420 revise things to get a little more pull in the system so that they can lock the 1664 00:45:44,420 --> 00:45:44,430 in the system so that they can lock the 1665 00:45:44,430 --> 00:45:47,630 in the system so that they can lock the rivets so that's what that one is 1666 00:45:47,630 --> 00:45:47,640 rivets so that's what that one is 1667 00:45:47,640 --> 00:45:53,570 rivets so that's what that one is is used for that one there would be for 1668 00:45:53,570 --> 00:45:53,580 is used for that one there would be for 1669 00:45:53,580 --> 00:45:56,000 is used for that one there would be for the blind fasteners then you have 1670 00:45:56,000 --> 00:45:56,010 the blind fasteners then you have 1671 00:45:56,010 --> 00:45:59,840 the blind fasteners then you have locking torque tests and this last one 1672 00:45:59,840 --> 00:45:59,850 locking torque tests and this last one 1673 00:45:59,850 --> 00:46:02,660 locking torque tests and this last one here has been I'm not sure whether the 1674 00:46:02,660 --> 00:46:02,670 here has been I'm not sure whether the 1675 00:46:02,670 --> 00:46:05,240 here has been I'm not sure whether the final copy of that one is even in the 1676 00:46:05,240 --> 00:46:05,250 final copy of that one is even in the 1677 00:46:05,250 --> 00:46:09,470 final copy of that one is even in the book yet but I don't the last committee 1678 00:46:09,470 --> 00:46:09,480 book yet but I don't the last committee 1679 00:46:09,480 --> 00:46:11,120 book yet but I don't the last committee meeting we had it was discussed that 1680 00:46:11,120 --> 00:46:11,130 meeting we had it was discussed that 1681 00:46:11,130 --> 00:46:13,070 meeting we had it was discussed that that one was being published barrel nut 1682 00:46:13,070 --> 00:46:13,080 that one was being published barrel nut 1683 00:46:13,080 --> 00:46:16,160 that one was being published barrel nut tension test which which we didn't have 1684 00:46:16,160 --> 00:46:16,170 tension test which which we didn't have 1685 00:46:16,170 --> 00:46:24,170 tension test which which we didn't have Dave and we did the CM 1b bans now for 1686 00:46:24,170 --> 00:46:24,180 Dave and we did the CM 1b bans now for 1687 00:46:24,180 --> 00:46:28,070 Dave and we did the CM 1b bans now for the the metric side you have these that 1688 00:46:28,070 --> 00:46:28,080 the the metric side you have these that 1689 00:46:28,080 --> 00:46:30,050 the the metric side you have these that are covered and they for some reason or 1690 00:46:30,050 --> 00:46:30,060 are covered and they for some reason or 1691 00:46:30,060 --> 00:46:33,140 are covered and they for some reason or rather they changed it to a DoD standard 1692 00:46:33,140 --> 00:46:33,150 rather they changed it to a DoD standard 1693 00:46:33,150 --> 00:46:35,870 rather they changed it to a DoD standard thirteen twelve for the metric in order 1694 00:46:35,870 --> 00:46:35,880 thirteen twelve for the metric in order 1695 00:46:35,880 --> 00:46:39,610 thirteen twelve for the metric in order to differentiate in the mil standard and 1696 00:46:39,610 --> 00:46:39,620 to differentiate in the mil standard and 1697 00:46:39,620 --> 00:46:41,930 to differentiate in the mil standard and these are the ones that they have for 1698 00:46:41,930 --> 00:46:41,940 these are the ones that they have for 1699 00:46:41,940 --> 00:46:47,300 these are the ones that they have for testing of metric fasteners now we go 1700 00:46:47,300 --> 00:46:47,310 testing of metric fasteners now we go 1701 00:46:47,310 --> 00:46:50,300 testing of metric fasteners now we go into the the do's and don'ts of fastener 1702 00:46:50,300 --> 00:46:50,310 into the the do's and don'ts of fastener 1703 00:46:50,310 --> 00:46:54,730 into the the do's and don'ts of fastener designs and I I kind of come up with a 1704 00:46:54,730 --> 00:46:54,740 designs and I I kind of come up with a 1705 00:46:54,740 --> 00:46:57,710 designs and I I kind of come up with a set of guidelines you're just common 1706 00:46:57,710 --> 00:46:57,720 set of guidelines you're just common 1707 00:46:57,720 --> 00:47:00,560 set of guidelines you're just common sense type guidelines that for you to 1708 00:47:00,560 --> 00:47:00,570 sense type guidelines that for you to 1709 00:47:00,570 --> 00:47:02,900 sense type guidelines that for you to use and it's not a complete list because 1710 00:47:02,900 --> 00:47:02,910 use and it's not a complete list because 1711 00:47:02,910 --> 00:47:04,370 use and it's not a complete list because you can always come up with an addition 1712 00:47:04,370 --> 00:47:04,380 you can always come up with an addition 1713 00:47:04,380 --> 00:47:07,850 you can always come up with an addition for a list but these at least could be 1714 00:47:07,850 --> 00:47:07,860 for a list but these at least could be 1715 00:47:07,860 --> 00:47:12,170 for a list but these at least could be used as a designer's checklist and one 1716 00:47:12,170 --> 00:47:12,180 used as a designer's checklist and one 1717 00:47:12,180 --> 00:47:15,520 used as a designer's checklist and one of the things that's a pet peeve of mine 1718 00:47:15,520 --> 00:47:15,530 of the things that's a pet peeve of mine 1719 00:47:15,530 --> 00:47:18,110 of the things that's a pet peeve of mine is a field that enough information 1720 00:47:18,110 --> 00:47:18,120 is a field that enough information 1721 00:47:18,120 --> 00:47:21,470 is a field that enough information should be given on a drawing to fully 1722 00:47:21,470 --> 00:47:21,480 should be given on a drawing to fully 1723 00:47:21,480 --> 00:47:24,380 should be given on a drawing to fully define the fasteners you want and I know 1724 00:47:24,380 --> 00:47:24,390 define the fasteners you want and I know 1725 00:47:24,390 --> 00:47:26,420 define the fasteners you want and I know in the past I've been disappointed in 1726 00:47:26,420 --> 00:47:26,430 in the past I've been disappointed in 1727 00:47:26,430 --> 00:47:28,750 in the past I've been disappointed in some of the drawings in which they say 1728 00:47:28,750 --> 00:47:28,760 some of the drawings in which they say 1729 00:47:28,760 --> 00:47:36,950 some of the drawings in which they say all fasteners to be per ffs 86 or 85 now 1730 00:47:36,950 --> 00:47:36,960 all fasteners to be per ffs 86 or 85 now 1731 00:47:36,960 --> 00:47:38,990 all fasteners to be per ffs 86 or 85 now if you go look at that spec you can 1732 00:47:38,990 --> 00:47:39,000 if you go look at that spec you can 1733 00:47:39,000 --> 00:47:42,500 if you go look at that spec you can anything from alloy steel stainless 1734 00:47:42,500 --> 00:47:42,510 anything from alloy steel stainless 1735 00:47:42,510 --> 00:47:46,210 anything from alloy steel stainless steel down to even nylon fasteners on it 1736 00:47:46,210 --> 00:47:46,220 steel down to even nylon fasteners on it 1737 00:47:46,220 --> 00:47:48,530 steel down to even nylon fasteners on it so you're giving the guy a lot of leeway 1738 00:47:48,530 --> 00:47:48,540 so you're giving the guy a lot of leeway 1739 00:47:48,540 --> 00:47:50,570 so you're giving the guy a lot of leeway if you don't define it any further than 1740 00:47:50,570 --> 00:47:50,580 if you don't define it any further than 1741 00:47:50,580 --> 00:47:53,930 if you don't define it any further than that so this is why that I said fully 1742 00:47:53,930 --> 00:47:53,940 that so this is why that I said fully 1743 00:47:53,940 --> 00:47:56,540 that so this is why that I said fully defined fasteners you want in other 1744 00:47:56,540 --> 00:47:56,550 defined fasteners you want in other 1745 00:47:56,550 --> 00:47:58,130 defined fasteners you want in other words when you call them out for a 1746 00:47:58,130 --> 00:47:58,140 words when you call them out for a 1747 00:47:58,140 --> 00:48:04,010 words when you call them out for a specification give the paragraph of that 1748 00:48:04,010 --> 00:48:04,020 specification give the paragraph of that 1749 00:48:04,020 --> 00:48:06,050 specification give the paragraph of that specification that covers the fasteners 1750 00:48:06,050 --> 00:48:06,060 specification that covers the fasteners 1751 00:48:06,060 --> 00:48:10,340 specification that covers the fasteners that you want to use or if you are not 1752 00:48:10,340 --> 00:48:10,350 that you want to use or if you are not 1753 00:48:10,350 --> 00:48:12,170 that you want to use or if you are not satisfied with how its defined in the 1754 00:48:12,170 --> 00:48:12,180 satisfied with how its defined in the 1755 00:48:12,180 --> 00:48:16,240 satisfied with how its defined in the spec give the strength level required 1756 00:48:16,240 --> 00:48:16,250 spec give the strength level required 1757 00:48:16,250 --> 00:48:21,560 spec give the strength level required for example on drawings on materials I 1758 00:48:21,560 --> 00:48:21,570 for example on drawings on materials I 1759 00:48:21,570 --> 00:48:25,280 for example on drawings on materials I know I have seen on drawings where it is 1760 00:48:25,280 --> 00:48:25,290 know I have seen on drawings where it is 1761 00:48:25,290 --> 00:48:27,860 know I have seen on drawings where it is critical enough that you even specify 1762 00:48:27,860 --> 00:48:27,870 critical enough that you even specify 1763 00:48:27,870 --> 00:48:30,290 critical enough that you even specify the grain direction on the drawing 1764 00:48:30,290 --> 00:48:30,300 the grain direction on the drawing 1765 00:48:30,300 --> 00:48:33,820 the grain direction on the drawing because you know on materials you have a 1766 00:48:33,820 --> 00:48:33,830 because you know on materials you have a 1767 00:48:33,830 --> 00:48:36,530 because you know on materials you have a longitudinal transverse and short 1768 00:48:36,530 --> 00:48:36,540 longitudinal transverse and short 1769 00:48:36,540 --> 00:48:41,090 longitudinal transverse and short transverse directions on them the short 1770 00:48:41,090 --> 00:48:41,100 transverse directions on them the short 1771 00:48:41,100 --> 00:48:44,360 transverse directions on them the short transverse is usually the weak one so 1772 00:48:44,360 --> 00:48:44,370 transverse is usually the weak one so 1773 00:48:44,370 --> 00:48:47,840 transverse is usually the weak one so you specify on the drawing and the the 1774 00:48:47,840 --> 00:48:47,850 you specify on the drawing and the the 1775 00:48:47,850 --> 00:48:50,900 you specify on the drawing and the the area of major stress that you want that 1776 00:48:50,900 --> 00:48:50,910 area of major stress that you want that 1777 00:48:50,910 --> 00:48:54,740 area of major stress that you want that to be the longitudinal direction in 1778 00:48:54,740 --> 00:48:54,750 to be the longitudinal direction in 1779 00:48:54,750 --> 00:48:57,640 to be the longitudinal direction in order to get better properties so 1780 00:48:57,640 --> 00:48:57,650 order to get better properties so 1781 00:48:57,650 --> 00:49:00,680 order to get better properties so specify what you want on the face of the 1782 00:49:00,680 --> 00:49:00,690 specify what you want on the face of the 1783 00:49:00,690 --> 00:49:04,790 specify what you want on the face of the drawing now here I mentioned earlier in 1784 00:49:04,790 --> 00:49:04,800 drawing now here I mentioned earlier in 1785 00:49:04,800 --> 00:49:07,880 drawing now here I mentioned earlier in the course using up it's softer than the 1786 00:49:07,880 --> 00:49:07,890 the course using up it's softer than the 1787 00:49:07,890 --> 00:49:10,070 the course using up it's softer than the bolt that'll keep you out of trouble and 1788 00:49:10,070 --> 00:49:10,080 bolt that'll keep you out of trouble and 1789 00:49:10,080 --> 00:49:12,170 bolt that'll keep you out of trouble and that distributes the loads on the thread 1790 00:49:12,170 --> 00:49:12,180 that distributes the loads on the thread 1791 00:49:12,180 --> 00:49:16,670 that distributes the loads on the thread because usually if you torque a fastener 1792 00:49:16,670 --> 00:49:16,680 because usually if you torque a fastener 1793 00:49:16,680 --> 00:49:19,640 because usually if you torque a fastener to failure with a nut it will fail in 1794 00:49:19,640 --> 00:49:19,650 to failure with a nut it will fail in 1795 00:49:19,650 --> 00:49:23,900 to failure with a nut it will fail in the first two threads in the thread 1796 00:49:23,900 --> 00:49:23,910 the first two threads in the thread 1797 00:49:23,910 --> 00:49:26,360 the first two threads in the thread run-out area due to stress concentration 1798 00:49:26,360 --> 00:49:26,370 run-out area due to stress concentration 1799 00:49:26,370 --> 00:49:31,760 run-out area due to stress concentration so the nut will not fail usually it's 1800 00:49:31,760 --> 00:49:31,770 so the nut will not fail usually it's 1801 00:49:31,770 --> 00:49:34,400 so the nut will not fail usually it's the the bolt that fails and don't use 1802 00:49:34,400 --> 00:49:34,410 the the bolt that fails and don't use 1803 00:49:34,410 --> 00:49:37,910 the the bolt that fails and don't use feather edges on sheets in a joint match 1804 00:49:37,910 --> 00:49:37,920 feather edges on sheets in a joint match 1805 00:49:37,920 --> 00:49:41,060 feather edges on sheets in a joint match drill for counter sunk holes use 1806 00:49:41,060 --> 00:49:41,070 drill for counter sunk holes use 1807 00:49:41,070 --> 00:49:43,310 drill for counter sunk holes use floating nut plates for critical designs 1808 00:49:43,310 --> 00:49:43,320 floating nut plates for critical designs 1809 00:49:43,320 --> 00:49:45,380 floating nut plates for critical designs particularly for counter sunk fasteners 1810 00:49:45,380 --> 00:49:45,390 particularly for counter sunk fasteners 1811 00:49:45,390 --> 00:49:49,640 particularly for counter sunk fasteners so that the countersink can Center the 1812 00:49:49,640 --> 00:49:49,650 so that the countersink can Center the 1813 00:49:49,650 --> 00:49:52,580 so that the countersink can Center the fastener and the nut plate will not be 1814 00:49:52,580 --> 00:49:52,590 fastener and the nut plate will not be 1815 00:49:52,590 --> 00:49:52,819 fastener and the nut plate will not be try 1816 00:49:52,819 --> 00:49:52,829 try 1817 00:49:52,829 --> 00:49:56,930 try bend it determine the environmental 1818 00:49:56,930 --> 00:49:56,940 bend it determine the environmental 1819 00:49:56,940 --> 00:49:59,269 bend it determine the environmental conditions before selecting materials or 1820 00:49:59,269 --> 00:49:59,279 conditions before selecting materials or 1821 00:49:59,279 --> 00:50:02,359 conditions before selecting materials or coatings for fasteners because you want 1822 00:50:02,359 --> 00:50:02,369 coatings for fasteners because you want 1823 00:50:02,369 --> 00:50:04,940 coatings for fasteners because you want to make sure that you're covered with 1824 00:50:04,940 --> 00:50:04,950 to make sure that you're covered with 1825 00:50:04,950 --> 00:50:08,059 to make sure that you're covered with your temperature range and design sure 1826 00:50:08,059 --> 00:50:08,069 your temperature range and design sure 1827 00:50:08,069 --> 00:50:10,039 your temperature range and design sure fasteners to be critical and varying 1828 00:50:10,039 --> 00:50:10,049 fasteners to be critical and varying 1829 00:50:10,049 --> 00:50:13,370 fasteners to be critical and varying that means that the fastener is stronger 1830 00:50:13,370 --> 00:50:13,380 that means that the fastener is stronger 1831 00:50:13,380 --> 00:50:16,009 that means that the fastener is stronger in shear than the material so therefore 1832 00:50:16,009 --> 00:50:16,019 in shear than the material so therefore 1833 00:50:16,019 --> 00:50:18,049 in shear than the material so therefore you can elongate the hole and the 1834 00:50:18,049 --> 00:50:18,059 you can elongate the hole and the 1835 00:50:18,059 --> 00:50:21,049 you can elongate the hole and the material to allow your fasteners to pick 1836 00:50:21,049 --> 00:50:21,059 material to allow your fasteners to pick 1837 00:50:21,059 --> 00:50:26,599 material to allow your fasteners to pick up the load without failing the fastener 1838 00:50:26,599 --> 00:50:26,609 up the load without failing the fastener 1839 00:50:26,609 --> 00:50:31,069 up the load without failing the fastener don't use Jam nuts for locking check 1840 00:50:31,069 --> 00:50:31,079 don't use Jam nuts for locking check 1841 00:50:31,079 --> 00:50:33,289 don't use Jam nuts for locking check alignment of fasteners before final 1842 00:50:33,289 --> 00:50:33,299 alignment of fasteners before final 1843 00:50:33,299 --> 00:50:36,739 alignment of fasteners before final assembly and of course as a corollary of 1844 00:50:36,739 --> 00:50:36,749 assembly and of course as a corollary of 1845 00:50:36,749 --> 00:50:38,930 assembly and of course as a corollary of that avoid head bending because the 1846 00:50:38,930 --> 00:50:38,940 that avoid head bending because the 1847 00:50:38,940 --> 00:50:41,499 that avoid head bending because the fastener bending I think the SAE 1848 00:50:41,499 --> 00:50:41,509 fastener bending I think the SAE 1849 00:50:41,509 --> 00:50:44,539 fastener bending I think the SAE handbook says don't go more than plus or 1850 00:50:44,539 --> 00:50:44,549 handbook says don't go more than plus or 1851 00:50:44,549 --> 00:50:47,329 handbook says don't go more than plus or minus two degrees on misalignment on a 1852 00:50:47,329 --> 00:50:47,339 minus two degrees on misalignment on a 1853 00:50:47,339 --> 00:50:51,079 minus two degrees on misalignment on a fastener head to avoid trouble with 1854 00:50:51,079 --> 00:50:51,089 fastener head to avoid trouble with 1855 00:50:51,089 --> 00:50:54,709 fastener head to avoid trouble with bending and followed the edge distance 1856 00:50:54,709 --> 00:50:54,719 bending and followed the edge distance 1857 00:50:54,719 --> 00:50:57,469 bending and followed the edge distance and spacing guidelines on fasteners now 1858 00:50:57,469 --> 00:50:57,479 and spacing guidelines on fasteners now 1859 00:50:57,479 --> 00:50:59,569 and spacing guidelines on fasteners now you can temper this but one of the 1860 00:50:59,569 --> 00:50:59,579 you can temper this but one of the 1861 00:50:59,579 --> 00:51:01,489 you can temper this but one of the things that you don't do is put a 1862 00:51:01,489 --> 00:51:01,499 things that you don't do is put a 1863 00:51:01,499 --> 00:51:04,489 things that you don't do is put a fastener so close to the edge that if 1864 00:51:04,489 --> 00:51:04,499 fastener so close to the edge that if 1865 00:51:04,499 --> 00:51:06,829 fastener so close to the edge that if the tolerance goes against you when the 1866 00:51:06,829 --> 00:51:06,839 the tolerance goes against you when the 1867 00:51:06,839 --> 00:51:09,229 the tolerance goes against you when the hole is drilled you'll have it pushing 1868 00:51:09,229 --> 00:51:09,239 hole is drilled you'll have it pushing 1869 00:51:09,239 --> 00:51:11,779 hole is drilled you'll have it pushing out of the hitch and I've seen some that 1870 00:51:11,779 --> 00:51:11,789 out of the hitch and I've seen some that 1871 00:51:11,789 --> 00:51:15,109 out of the hitch and I've seen some that were almost that bad now don't use 1872 00:51:15,109 --> 00:51:15,119 were almost that bad now don't use 1873 00:51:15,119 --> 00:51:17,479 were almost that bad now don't use fasteners that look alike but are made 1874 00:51:17,479 --> 00:51:17,489 fasteners that look alike but are made 1875 00:51:17,489 --> 00:51:20,390 fasteners that look alike but are made of different materials they'll use 300 1876 00:51:20,390 --> 00:51:20,400 of different materials they'll use 300 1877 00:51:20,400 --> 00:51:22,939 of different materials they'll use 300 stainless and 2a 286 stainless the same 1878 00:51:22,939 --> 00:51:22,949 stainless and 2a 286 stainless the same 1879 00:51:22,949 --> 00:51:26,329 stainless and 2a 286 stainless the same size same head everything that so that 1880 00:51:26,329 --> 00:51:26,339 size same head everything that so that 1881 00:51:26,339 --> 00:51:27,349 size same head everything that so that you can't tell the difference between 1882 00:51:27,349 --> 00:51:27,359 you can't tell the difference between 1883 00:51:27,359 --> 00:51:29,989 you can't tell the difference between them and don't use fine and coarse 1884 00:51:29,989 --> 00:51:29,999 them and don't use fine and coarse 1885 00:51:29,999 --> 00:51:32,120 them and don't use fine and coarse threads in the same assembly unless 1886 00:51:32,120 --> 00:51:32,130 threads in the same assembly unless 1887 00:51:32,130 --> 00:51:33,589 threads in the same assembly unless there's a big difference in the fastener 1888 00:51:33,589 --> 00:51:33,599 there's a big difference in the fastener 1889 00:51:33,599 --> 00:51:37,670 there's a big difference in the fastener diameter so it's not possible to get 1890 00:51:37,670 --> 00:51:37,680 diameter so it's not possible to get 1891 00:51:37,680 --> 00:51:40,219 diameter so it's not possible to get them in the wrong holes and here's 1892 00:51:40,219 --> 00:51:40,229 them in the wrong holes and here's 1893 00:51:40,229 --> 00:51:42,680 them in the wrong holes and here's something that you can get in trouble 1894 00:51:42,680 --> 00:51:42,690 something that you can get in trouble 1895 00:51:42,690 --> 00:51:44,599 something that you can get in trouble with although we did it on fittings on 1896 00:51:44,599 --> 00:51:44,609 with although we did it on fittings on 1897 00:51:44,609 --> 00:51:48,170 with although we did it on fittings on cm-1 don't mix metric and inch fasteners 1898 00:51:48,170 --> 00:51:48,180 cm-1 don't mix metric and inch fasteners 1899 00:51:48,180 --> 00:51:51,380 cm-1 don't mix metric and inch fasteners in a design that that'll get you in real 1900 00:51:51,380 --> 00:51:51,390 in a design that that'll get you in real 1901 00:51:51,390 --> 00:51:55,039 in a design that that'll get you in real trouble verify that you have the 1902 00:51:55,039 --> 00:51:55,049 trouble verify that you have the 1903 00:51:55,049 --> 00:51:57,589 trouble verify that you have the fasteners you specified and demand 1904 00:51:57,589 --> 00:51:57,599 fasteners you specified and demand 1905 00:51:57,599 --> 00:52:00,349 fasteners you specified and demand traceability if it is a critical design 1906 00:52:00,349 --> 00:52:00,359 traceability if it is a critical design 1907 00:52:00,359 --> 00:52:02,120 traceability if it is a critical design make sure that you get the proper 1908 00:52:02,120 --> 00:52:02,130 make sure that you get the proper 1909 00:52:02,130 --> 00:52:05,209 make sure that you get the proper traceability of the fasteners use 1910 00:52:05,209 --> 00:52:05,219 traceability of the fasteners use 1911 00:52:05,219 --> 00:52:06,710 traceability of the fasteners use inserts and soften 1912 00:52:06,710 --> 00:52:06,720 inserts and soften 1913 00:52:06,720 --> 00:52:08,660 inserts and soften cereals to avoid fastener pull out if 1914 00:52:08,660 --> 00:52:08,670 cereals to avoid fastener pull out if 1915 00:52:08,670 --> 00:52:12,470 cereals to avoid fastener pull out if you can't use through holes if the 1916 00:52:12,470 --> 00:52:12,480 you can't use through holes if the 1917 00:52:12,480 --> 00:52:15,470 you can't use through holes if the dominant fastener load is sheer don't 1918 00:52:15,470 --> 00:52:15,480 dominant fastener load is sheer don't 1919 00:52:15,480 --> 00:52:17,300 dominant fastener load is sheer don't use a high torque on the fastener 1920 00:52:17,300 --> 00:52:17,310 use a high torque on the fastener 1921 00:52:17,310 --> 00:52:20,210 use a high torque on the fastener because you have to combine the fastener 1922 00:52:20,210 --> 00:52:20,220 because you have to combine the fastener 1923 00:52:20,220 --> 00:52:23,450 because you have to combine the fastener and shear loads to the total strength of 1924 00:52:23,450 --> 00:52:23,460 and shear loads to the total strength of 1925 00:52:23,460 --> 00:52:25,190 and shear loads to the total strength of the material so you don't want to use up 1926 00:52:25,190 --> 00:52:25,200 the material so you don't want to use up 1927 00:52:25,200 --> 00:52:28,160 the material so you don't want to use up all of it in tension if your primary 1928 00:52:28,160 --> 00:52:28,170 all of it in tension if your primary 1929 00:52:28,170 --> 00:52:32,720 all of it in tension if your primary load is shear avoid tap poles as much as 1930 00:52:32,720 --> 00:52:32,730 load is shear avoid tap poles as much as 1931 00:52:32,730 --> 00:52:35,380 load is shear avoid tap poles as much as possible because you can't inspect them 1932 00:52:35,380 --> 00:52:35,390 possible because you can't inspect them 1933 00:52:35,390 --> 00:52:40,730 possible because you can't inspect them you're not sure how good they are so if 1934 00:52:40,730 --> 00:52:40,740 you're not sure how good they are so if 1935 00:52:40,740 --> 00:52:44,300 you're not sure how good they are so if you can avoid them don't use them use 1936 00:52:44,300 --> 00:52:44,310 you can avoid them don't use them use 1937 00:52:44,310 --> 00:52:46,960 you can avoid them don't use them use harden washers under both the head and 1938 00:52:46,960 --> 00:52:46,970 harden washers under both the head and 1939 00:52:46,970 --> 00:52:50,990 harden washers under both the head and the nut on a bolded installation if 1940 00:52:50,990 --> 00:52:51,000 the nut on a bolded installation if 1941 00:52:51,000 --> 00:52:54,080 the nut on a bolded installation if possible don't Terk a fastener above its 1942 00:52:54,080 --> 00:52:54,090 possible don't Terk a fastener above its 1943 00:52:54,090 --> 00:52:57,190 possible don't Terk a fastener above its yield point stay below the yield point 1944 00:52:57,190 --> 00:52:57,200 yield point stay below the yield point 1945 00:52:57,200 --> 00:53:01,520 yield point stay below the yield point and don't get close to it unless you run 1946 00:53:01,520 --> 00:53:01,530 and don't get close to it unless you run 1947 00:53:01,530 --> 00:53:03,740 and don't get close to it unless you run sufficient tests to determine 1948 00:53:03,740 --> 00:53:03,750 sufficient tests to determine 1949 00:53:03,750 --> 00:53:06,020 sufficient tests to determine pretty much where it is then in a 1950 00:53:06,020 --> 00:53:06,030 pretty much where it is then in a 1951 00:53:06,030 --> 00:53:09,010 pretty much where it is then in a fatigue joint if you have to go up 1952 00:53:09,010 --> 00:53:09,020 fatigue joint if you have to go up 1953 00:53:09,020 --> 00:53:11,780 fatigue joint if you have to go up because of fatigue then you can go up to 1954 00:53:11,780 --> 00:53:11,790 because of fatigue then you can go up to 1955 00:53:11,790 --> 00:53:13,849 because of fatigue then you can go up to a near yield 1956 00:53:13,849 --> 00:53:13,859 a near yield 1957 00:53:13,859 --> 00:53:18,020 a near yield thou'rt the use of lubricants lowers the 1958 00:53:18,020 --> 00:53:18,030 thou'rt the use of lubricants lowers the 1959 00:53:18,030 --> 00:53:19,820 thou'rt the use of lubricants lowers the coefficient of friction so the Clerc 1960 00:53:19,820 --> 00:53:19,830 coefficient of friction so the Clerc 1961 00:53:19,830 --> 00:53:23,320 coefficient of friction so the Clerc values have to be adjusted accordingly 1962 00:53:23,320 --> 00:53:23,330 values have to be adjusted accordingly 1963 00:53:23,330 --> 00:53:26,210 values have to be adjusted accordingly one of the cases we had at the Cape of 1964 00:53:26,210 --> 00:53:26,220 one of the cases we had at the Cape of 1965 00:53:26,220 --> 00:53:29,359 one of the cases we had at the Cape of this using silver-plated nuts stainless 1966 00:53:29,359 --> 00:53:29,369 this using silver-plated nuts stainless 1967 00:53:29,369 --> 00:53:31,400 this using silver-plated nuts stainless steel nuts of course the silver 1968 00:53:31,400 --> 00:53:31,410 steel nuts of course the silver 1969 00:53:31,410 --> 00:53:33,170 steel nuts of course the silver tarnishes so if you have them in a 1970 00:53:33,170 --> 00:53:33,180 tarnishes so if you have them in a 1971 00:53:33,180 --> 00:53:35,870 tarnishes so if you have them in a barrel for a long time they look bad so 1972 00:53:35,870 --> 00:53:35,880 barrel for a long time they look bad so 1973 00:53:35,880 --> 00:53:39,440 barrel for a long time they look bad so some manufacturer decided he would stop 1974 00:53:39,440 --> 00:53:39,450 some manufacturer decided he would stop 1975 00:53:39,450 --> 00:53:42,740 some manufacturer decided he would stop that so he coated these silver plated 1976 00:53:42,740 --> 00:53:42,750 that so he coated these silver plated 1977 00:53:42,750 --> 00:53:46,400 that so he coated these silver plated nuts with wax from tarnishing they 1978 00:53:46,400 --> 00:53:46,410 nuts with wax from tarnishing they 1979 00:53:46,410 --> 00:53:48,170 nuts with wax from tarnishing they didn't tarnish but nobody told the guy 1980 00:53:48,170 --> 00:53:48,180 didn't tarnish but nobody told the guy 1981 00:53:48,180 --> 00:53:50,180 didn't tarnish but nobody told the guy using the torque wrench so they were 1982 00:53:50,180 --> 00:53:50,190 using the torque wrench so they were 1983 00:53:50,190 --> 00:53:51,650 using the torque wrench so they were yielding these things all over the place 1984 00:53:51,650 --> 00:53:51,660 yielding these things all over the place 1985 00:53:51,660 --> 00:53:53,930 yielding these things all over the place and couldn't figure out why they were 1986 00:53:53,930 --> 00:53:53,940 and couldn't figure out why they were 1987 00:53:53,940 --> 00:53:56,240 and couldn't figure out why they were yielding well somebody found out that 1988 00:53:56,240 --> 00:53:56,250 yielding well somebody found out that 1989 00:53:56,250 --> 00:54:00,230 yielding well somebody found out that because the wax actually reduced the 1990 00:54:00,230 --> 00:54:00,240 because the wax actually reduced the 1991 00:54:00,240 --> 00:54:01,910 because the wax actually reduced the coefficient of friction to about half of 1992 00:54:01,910 --> 00:54:01,920 coefficient of friction to about half of 1993 00:54:01,920 --> 00:54:07,099 coefficient of friction to about half of what it would normally be and Clerc 1994 00:54:07,099 --> 00:54:07,109 what it would normally be and Clerc 1995 00:54:07,109 --> 00:54:10,460 what it would normally be and Clerc tables are only guidelines the design 1996 00:54:10,460 --> 00:54:10,470 tables are only guidelines the design 1997 00:54:10,470 --> 00:54:12,079 tables are only guidelines the design engineer should determine the turqu 1998 00:54:12,079 --> 00:54:12,089 engineer should determine the turqu 1999 00:54:12,089 --> 00:54:16,190 engineer should determine the turqu values for his design because that's why 2000 00:54:16,190 --> 00:54:16,200 values for his design because that's why 2001 00:54:16,200 --> 00:54:19,280 values for his design because that's why you don't blindly use a turk table and 2002 00:54:19,280 --> 00:54:19,290 you don't blindly use a turk table and 2003 00:54:19,290 --> 00:54:21,430 you don't blindly use a turk table and will get you in trouble 2004 00:54:21,430 --> 00:54:21,440 will get you in trouble 2005 00:54:21,440 --> 00:54:24,350 will get you in trouble fasteners loaded in fatigues should be 2006 00:54:24,350 --> 00:54:24,360 fasteners loaded in fatigues should be 2007 00:54:24,360 --> 00:54:25,880 fasteners loaded in fatigues should be trucked the near yield values I 2008 00:54:25,880 --> 00:54:25,890 trucked the near yield values I 2009 00:54:25,890 --> 00:54:31,670 trucked the near yield values I mentioned that earlier and before we go 2010 00:54:31,670 --> 00:54:31,680 mentioned that earlier and before we go 2011 00:54:31,680 --> 00:54:35,800 mentioned that earlier and before we go into the frequently asked questions on 2012 00:54:35,800 --> 00:54:35,810 into the frequently asked questions on 2013 00:54:35,810 --> 00:54:39,910 into the frequently asked questions on for design we'll take a short break and 2014 00:54:39,910 --> 00:54:39,920 for design we'll take a short break and 2015 00:54:39,920 --> 00:54:43,070 for design we'll take a short break and come back then and finish up the 2016 00:54:43,070 --> 00:54:43,080 come back then and finish up the 2017 00:54:43,080 --> 00:54:46,550 come back then and finish up the question and answer section