| 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 |
0.32 |
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 |
0.84 |
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 |
1.45 |
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 |
1.03 |
1 1/2 |
1.5000 |
21/4 |
2.250 |
2.175 |
2.598 |
2.48 |
1 9/32 |
1.317 |
1.245 |
