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Dimensions for ASME B18.2.2 Hex Nuts

Dimensions for ASME B18.2.2 Hex Nuts:

ASME B18.2.2 Hex Nuts

Nominal Size Basic Major
Thread Diameter
Width Across Flats, F Width Across Corners, G Thickness Hex Nuts, H

 

Min. Max. Min. Max. Min. Max.

 

1/4 0.25 0.428 0.438 0.488 0.505 0.212 0.226
5/16 0.3125 0.489 0.500 0.557 0.577 0.258 0.273
3/8 0.375 0.551 0.563 0.628 0.650 0.320 0.337
7/16 0.4375 0.675 0.688 0.768 0.794 0.365 0.385
1/2 0.50 0.736 0.750 0.840 0.866 0.427 0.448
9/16 0.5625 0.861 0.875 0.982 1.010 0.473 0.496
5/8 0.625 0.922 0.938 1.051 1.083 0.535 0.559
3/4 0.75 1.088 1.125 1.240 1.299 0.617 0.665
7/8 0.875 1.269 1.312 1.447 1.516 0.724 0.776
1 1.00 1.450 1.500 1.653 1.732 0.831 0.887
1 1/8 1.125 0.631 1.688 1.859 1.949 0.939 0.999
1 1/4 1.25 1.812 1.875 2.066 2.165 1.030 1.094
1 3/8 1.375 2.994 2.062 2.273 2.382 1.138 1.206
1 1/2 1.50 2.175 2.250 2.480 2.598 1.245 1.317
1 5/8 1.625 2.350 2.430 2.679 2.805 1.364 1.416
1 3/4 1.75 2.538 2.625 2.893 3.031 1.460 1.540
1 7/8 1.875 2.722 2.813 3.103 3.247 1.567 1.651
2 2.00 2.900 3.000 3.306 3.464 1.675 1.763
2 1/4 2.25 3.263 3.375 3.719 3.897 1.890 1.986
2 1/2 2.50 3.625 3.750 4.133 4.330 2.105 2.209
2 3/4 2.75 3.988 4.125 2.622 2.742 1.433 1.505
3 3.00 4.350 4.500 4.959 5.196 2.534 2.654
3 1/4 3.25 4.713 4.875 5.373 5.629 2.749 2.877
3 1/2 3.50 5.075 5.250 5.786 6.062 2.964 3.100
3 3/4 3.75 5.438 5.625 6.199 6.495 3.178 3.322
4 4.50 5.800 6.000 6.612 6.928 3.393 3.545
All Dimensions are in Inches.