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Technical Specifications


gages

Thread
Size
Pitch Diameter (in) Length
A
3B 2B
Go NoGo Go NoGo
Unified Coarse
2-56 0.0976 0.0989 0.0976 0.0996 2.5
3-48 0.1126 0.114 0.1126 0.1148 2.5
4-40 0.1283 0.1299 0.1283 0.1308 2.9
5-40 0.1413 0.143 0.1413 0.1438 2.9
6-32 0.1583 0.1601 0.1583 0.1611 2.9
8-32 0.1843 0.1862 0.1843 0.1872 3.1
10-24 0.217 0.2192 0.217 0.2203 3.1
12-24 0.243 0.2453 0.243 0.2464 3.1
1/4-20 0.2825 0.2851 0.2825 0.2863 3.5
5/16-18 0.3486 0.3515 0.3486 0.3529 3.5
3/8-16 0.4156 0.4189 0.4156 0.4203 4.6
7/16-14 0.4839 0.4875 0.4839 0.489 4.6
1/2-13 0.5499 0.5537 0.5499 0.5554 4.6
9/16-12 0.6167 0.6208 0.6167 0.6225 5.1
5/8-11 0.6841 0.6885 0.6841 0.6903 5.1
3/4-10 0.8149 0.8196 0.8149 0.8216 5.1
7/8-9 0.9471 0.9522 0.9471 0.9543 5.8
1-8 1.0812 1.0868 1.0812 1.0868 5.8
1-1/8-7 1.2178 1.2239 1.2178 1.2262 5.8
1-1/4-7 1.3428 1.349 1.3428 1.3514 6.8
1-3/8-6 1.4832 1.49 1.4832 1.4926 6.8
1-1/2-6 1.6082 1.6151 1.6082 1.6177 6.8
Unified Fine
0-80 0.0681 0.0690 0.0681 0.0697 2.9
3-56 0.1106 0.1119 0.1106 0.1126 2.5
4-48 0.1256 0.1271 0.1256 0.1279 2.9
6-40 0.1543 0.1560 0.1543 0.1569 2.9
8-36 0.1821 0.1840 0.1821 0.1849 3.1
10-32 0.2103 0.2123 0.2103 0.2133 3.1
1/4-28 0.2732 0.2754 0.2732 0.2765 4.0
5/16-24 0.3395 0.3421 0.3395 0.3433 4.0
3/8-24 0.4020 0.4047 0.4020 0.4059 4.6
7/16-20 0.4700 0.4731 0.4700 0.4744 4.6
1/2-20 0.5325 0.5357 0.5325 0.5371 4.6
9/16-18 0.5986 0.6020 0.5986 0.6035 5.1
5/8-18 0.6611 0.6646 0.6611 0.6661 5.1
3/4-16 0.7906 0.7945 0.7906 0.7961 5.1
7/8-14 0.9214 0.9257 0.9214 0.9274 5.8
1-12 1.0542 1.0589 1.0542 1.0608 5.8
1-1/8-12 1.1792 1.1841 1.1792 1.1860 5.8
1-1/4-12 1.3042 1.3092 1.3042 1.3112 6.8
1-3/8-12 1.4292 1.4343 1.4292 1.4364 6.8
1-1/2-12 1.5542 1.5595 1.5542 1.5615 6.8
Thread
Size
Pitch Diameter(mm) Length
A
4H 5H
Go NoGo Go NoGo
Metric Coarse
M2X0.4 2.260 2.295 2.260 2.310 63.5
M2.2X0.45 2.492 2.532 2.492 2.547 63.5
M2.5X0.45 2.792 2.832 2.792 2.847 63.5
M3X0.5 3.325 3.367 3.325 3.384 73.6
M3.5X0.6 3.890 3.940 3.890 3.959 73.6
M4X0.7 4.455 4.509 4.455 4.529 78.7
M5X0.8 5.520 5.577 5.520 5.597 78.7
M6X1 6.650 6.719 6.650 6.742 101.6
M7X1 7.650 7.719 7.650 7.742 101.6
M8X1.25 8.812 8.886 8.812 8.911 101.6
M10X1.5 10.974 11.061 10.974 11.089 116.8
M12X1.75 13.137 13.236 13.137 13.271 116.8
M14X2 15.299 15.406 15.299 15.444 129.5
M16X2 17.299 17.406 17.299 17.444 129.5
M18X2.5 19.624 19.738 19.624 19.778 129.5
M20X2.5 21.624 21.738 21.624 21.778 129.5
M22X2.5 23.624 23.738 23.624 23.778 129.5
M24X3 25.948 26.093 25.948 26.135 147.3
M27X3 28.948 29.093 28.948 29.135 147.3
Metric Fine
M8X1 8.650 8.719 8.650 8.742 101.6
M10X1 10.650 10.719 10.650 10.742 116.8
M10X1.25 10.812 10.886 10.812 10.911 116.8
M12X1.25 12.812 12.898 12.812 12.926 116.8
M12X1.5 12.974 13.067 12.974 13.099 116.8
M14X1.5 14.974 15.067 14.974 15.099 129.5
M16X1.5 16.974 17.067 16.974 17.099 129.5
M18X1.5 18.974 19.067 18.974 19.099 129.5
M20X1.5 20.974 21.067 20.974 21.099 129.5
M22.15 22.974 23.067 22.974 23.099 129.5
M18X2 19.299 19.406 19.299 19.444 129.5
M20X2 21.299 21.406 21.299 21.444 129.5
M22X2 23.299 23.406 23.299 23.444 129.5
M24X2 25.299 25.414 25.299 25.454 147.3
M27X2 28.299 28.414 28.299 28.455 147.3
M30X2 31.299 31.414 31.299 31.454 147.3
M39X2 40.299 40.414 40.299 40.454 171.5
M36X3 37.948 38.093 37.948 38.135 171.5
M39X3 40.948 41.093 40.948 41.135 171.5


Notes:

  1. All dimensions for unified sizes are inches.
  2. All dimensions for metric sizes are in mm.
  3. All dimensions are for reference only.