| Nominal or Basic Major Diameter of Thread |
F |
G |
H |
||||||
Width Across Flats |
Width Across Corners |
Thickness |
|||||||
Basic |
Max |
Min |
Max |
Min |
Basic |
Max |
Min |
||
1/4 |
0.2500 |
7/16 |
0.438 |
0.428 |
0.505 |
0.488 |
7/32 |
0.226 |
0.212 |
5/16 |
0.3125 |
1/2 |
0.500 |
0.489 |
0.577 |
0.557 |
17/64 |
0.273 |
0.258 |
3/8 |
0.3750 |
9/16 |
0.562 |
0.551 |
0.650 |
0.628 |
21/64 |
0.337 |
0.320 |
7/16 |
0.4375 |
11/16 |
0.688 |
0.675 |
0.794 |
0.768 |
3/8 |
0.385 |
0.365 |
1/2 |
0.5000 |
3/4 |
0.750 |
0.736 |
0.866 |
0.840 |
7/16 |
0.448 |
0.427 |
9/16 |
0.5625 |
7/8 |
0.875 |
0.861 |
1.010 |
0.982 |
31/64 |
0.496 |
0.473 |
5/8 |
0.6250 |
15/16 |
0.938 |
0.922 |
1.083 |
1.051 |
35/64 |
0.559 |
0.535 |
3/4 |
0.7500 |
1 1/8 |
1.125 |
1.088 |
1.299 |
1.240 |
41/64 |
0.665 |
0.617 |
7/8 |
0.8750 |
1 5/16 |
1.312 |
1.269 |
1.516 |
1.447 |
3/4 |
0.776 |
0.724 |
1 |
1.0000 |
1 1/2 |
1.500 |
1.450 |
1.732 |
1.653 |
55/64 |
0.887 |
0.831 |
1 1/8 |
1.1250 |
1 11/16 |
1.688 |
1.631 |
1.949 |
1.859 |
31/32 |
0.999 |
0.939 |
1 1/4 |
1.2500 |
1 7/8 |
1.875 |
1.812 |
2.165 |
2.066 |
1 1/16 |
1.094 |
1.030 |
1 3/8 |
1.3750 |
2 1/16 |
2.062 |
1.994 |
2.382 |
2.273 |
1 11/64 |
1.206 |
1.138 |
1 1/2 |
1.5000 |
21/4 |
2.250 |
2.175 |
2.598 |
2.480 |
1 9/32 |
1.317 |
1.245 |
1 5/8 |
1.6250 |
2 7/16 |
2.438 |
2.356 |
2.815 |
2.686 |
1 25/64 |
1.429 |
1.353 |
1 3/4 |
1.7500 |
2 5/8 |
2.625 |
2.538 |
3.031 |
2.893 |
1 1/2 |
1.540 |
1.460 |
2 |
2.0000 |
3 |
3.000 |
2.900 |
3.464 |
3.306 |
1 23/32 |
1.763 |
1.675 |
2 1/4 |
2.2500 |
3 3/8 |
3.375 |
3.263 |
3.897 |
3.719 |
1 15/16 |
1.986 |
1.890 |
2 1/2 |
2.5000 |
3 3/4 |
3.750 |
3.625 |
4.330 |
4.133 |
2 5/32 |
2.209 |
2.105 |
2 3/4 |
2.7500 |
4 1/8 |
4.125 |
3.988 |
4.763 |
4.546 |
2 3/8 |
2.431 |
2.319 |
3 |
3.0000 |
4 1/2 |
4.500 |
4.350 |
5.196 |
4.959 |
2 19/32 |
2.654 |
2.534 |
