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ASME B18.2.2 Heavy Square Nuts
Dimensions of Heavy Square Nuts |
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Nominial Size |
Basic Major Diameter of Thread |
Widtf Across Flats, F |
Width Across Corners, G |
Thickness |
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 |
1/2 |
0.488 |
0.500 |
0.640 |
0.707 |
1/4 |
0.218 |
0.266 |
0.026 |
5/16 |
0.3125 |
9/16 |
0.546 |
0.562 |
0.720 |
0.795 |
5/16 |
0.280 |
0.330 |
0.030 |
3/8 |
0.3750 |
11/16 |
0.699 |
0.688 |
0.889 |
0.973 |
3/8 |
0.341 |
0.393 |
0.038 |
7/16 |
0.4375 |
3/4 |
0.728 |
0.75 |
0.970 |
1.060 |
7/16 |
0.403 |
0.456 |
0.039 |
1/2 |
0.5000 |
7/8 |
0.850 |
0.875 |
1.137 |
1.237 |
1/2 |
0.464 |
0.520 |
0.046 |
5/8 |
0.6250 |
1 1/16 |
1.031 |
1.062 |
1.386 |
1.503 |
5/8 |
0.587 |
0.647 |
0.056 |
3/4 |
0.7500 |
1 1/4 |
1.212 |
1.25 |
1.635 |
1.768 |
3/4 |
0.710 |
0.774 |
0.065 |
7/8 |
0.8750 |
1 7/16 |
1.394 |
1.438 |
1.884 |
2.033 |
7/8 |
0.833 |
0.901 |
0.075 |
1 |
1.0000 |
1 5/8 |
1.575 |
1.625 |
2.132 |
2.298 |
1 |
0.956 |
1.028 |
0.082 |
1 1/8 |
1.1250 |
1 13/16 |
1.756 |
1.812 |
2.381 |
2.563 |
1 1/8 |
1.079 |
1.155 |
0.063 |
1 1/4 |
1.2500 |
2 |
1.938 |
2.000 |
2.631 |
2.828 |
1 1/4 |
1.187 |
1.282 |
0.070 |
1 3/8 |
1.3750 |
2 3/16 |
2.119 |
2.188 |
2.879 |
3.094 |
1 3/8 |
1.310 |
1.409 |
0.076 |
1 1/2 |
1.5000 |
2 3/8 |
2.300 |
2.375 |
3.128 |
3.359 |
1 1/2 |
1.433 |
1.536 |
0.082 |
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