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ASME B18.2.2 Square Nuts
Dimensions of Square Nuts |
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Nominial Size |
Basic Major Diameter of Thread |
Widtf Across Flats, F |
Width Across Corners, G |
Thickness Basic Min. Max. |
Bearing Surface Runout to Thread Axis, FLM |
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Basic |
Min. |
Max |
Min. |
Max |
Basic |
Min. |
Max |
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1/4 |
0.2500 |
7/16 |
0.425 |
0.438 |
0.554 |
0.619 |
7/32 |
0.203 |
0.235 |
0.110 |
5/16 |
0.3125 |
9/16 |
0.547 |
0.562 |
0.721 |
0.795 |
17/64 |
0.249 |
0.283 |
0.015 |
3/8 |
0.3750 |
5/8 |
0.606 |
0.625 |
0.802 |
0.884 |
21/64 |
0.310 |
0.346 |
0.016 |
7/16 |
0.4375 |
3/4 |
0.728 |
0.750 |
0.970 |
1.061 |
3/8 |
0.356 |
0.394 |
0.019 |
1/2 |
0.5000 |
13/16 |
0.788 |
0.812 |
1.052 |
1.149 |
7/16 |
0.418 |
0.458 |
0.022 |
5/8 |
0.6250 |
1 |
0.969 |
1.000 |
1.300 |
1.414 |
35/64 |
0.525 |
0.569 |
0.026 |
3/4 |
0.7500 |
1 1/8 |
1.088 |
1.125 |
1.464 |
1.591 |
21/32 |
0.632 |
0.680 |
0.029 |
7/8 |
0.8750 |
1 5/16 |
1.269 |
1.312 |
1.712 |
1.856 |
49/64 |
0.740 |
0.792 |
0.034 |
1 |
1.0000 |
1 1/2 |
1.450 |
1.500 |
1.961 |
2.121 |
7/8 |
0.847 |
0.903 |
0.039 |
1 1/8 |
1.1250 |
1 11/16 |
1.631 |
1.688 |
2.209 |
2.386 |
1 |
0.970 |
1.030 |
0.029 |
1 1/4 |
1.2500 |
1 7/8 |
1.812 |
1.875 |
2.458 |
2.652 |
1 3/32 |
1.062 |
1.126 |
0.032 |
1 3/8 |
1.3750 |
2 1/16 |
1.994 |
2.062 |
2.708 |
2.917 |
1 13/64 |
1.169 |
1.237 |
0.035 |
1 1/2 |
1.5000 |
2 1/4 |
2.175 |
2.250 |
2.956 |
3.182 |
1 5/16 |
1.276 |
1.348 |
0.039 |
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