ASME B18.2.2 Heavy Hex Slotted Nuts

ASME B18.2.2 Heavy Hex Slotted Nuts

Dimensions of Imperial Heavy Hex Slotted Nuts to ASME B18.2.2 Standard

Nominal Size
Inch		 Basic Major
Thread
Diameter		 Width Across Flats, F Width Across Corners, G Thickness, H Unslotted Thickness, T Width of Slot, S
Basic Min. Max. Min. Max. Basic Min. Max. Min. Max. Min. Max.
1/4 0.2500 1/2 0.488 0.500 0.556 0.577 15/64 0.218 0.250 0.13 0.15 0.07 0.10
5/16 0.3125 9/16 0.546 0.562 0.622 0.650 19/64 0.280 0.314 0.19 0.21 0.09 0.12
3/8 0.3750 11/16 0.669 0.688 0.763 0.794 23/64 0.341 0.377 0.22 0.24 0.12 0.15
7/16 0.4375 3/4 0.728 0.750 0.830 0.866 27/64 0.403 0.441 0.26 0.28 0.12 0.15
1/2 0.5000 7/8 0.850 0.875 0.969 1.010 31/64 0.464 0.504 0.32 0.34 0.15 0.18
9/16 0.5625 15/16 0.909 0.938 1.037 1.083 35/64 0.526 0.568 0.35 0.37 0.15 0.18
5/8 0.6250 1 1/16 1.031 1.062 1.175 1.227 39/64 0.587 0.631 0.38 0.40 0.18 .024
3/4 0.7500 1 1/4 1.212 1.250 1.382 1.443 47/64 0.710 0.758 0.47 0.49 0.18 0.24
7/8 0.8750 1 7/16 1.394 1.438 1.589 1.660 55/64 0.833 0.885 0.59 0.62 0.18 0.24
1 1.0000 1 5/8 1.575 1.625 1.796 1.876 63/64 0.956 1.012 0.69 0.72 0.24 0.30
1 1/8 1.1250 1 13/16 1.756 1.812 2.002 2.093 1 7/64 1.079 1.139 0.75 0.78 0.24 0.30
1 1/4 1.2500 2 1.938 2.000 2.209 2.309 1 7/32 1.187 1.251 0.83 0.86 0.31 0.40
1 3/8 1.3750 2 3/16 2.119 2.188 2.416 2.526 1 11/32 1.310 1.378 0.95 0.99 0.31 0.40
1 1/2 1.5000 2 3/8 2.300 2.375 2.622 2.742 1 15/32 1.433 1.505 1.01 1.05 0.37 0.46
1 3/4 1.7500 2 3/4 2.662 2.750 3.035 3.175 1 23/32 1.679 1.759 1.20 1.24 0.43 0.52
2 2.0000 3 1/8 3.025 3.125 3.449 3.608 1 31/32 1.925 2.013 1.38 1.43 0.43 0.52
2 1/4 2.2500 3 1/2 3.388 3.500 3.862 4.041 2 13/64 2.155 2.251 1.62 1.67 0.43 0.52
2 1/2 2.5000 3 7/8 3.750 3.875 4.275 4.474 2 29/64 2.401 2.505 1.74 1.79 0.55 0.64
2 3/4 2.7500 4 1/4 4.112 4.250 4.688 4.907 2 45/64 2.647 2.759 1.99 2.05 0.55 0.64
3 3.0000 4 5/8 4.475 4.625 5.102 5.340 2 61/64 2.893 3.013 2.17 2.23 0.62 0.71
3 1/4 3.2500 5 4.838 5.000 5.515 5.774 3 3/16 3.124 3.252 2.41 2.47 0.62 0.71
3 1/2 3.5000 5 3/8 5.200 5.375 5.928 6.207 3 7/16 3.370 3.506 2.65 2.72 0.62 0.71
3 3/4 3.7500 5 3/4 5.562 5.750 6.341 6.640 3 11/16 3.616 3.760 2.90 2.97 0.62 0.71
4 4.0000 6 1/8 5.925 6.125 6.755 7.073 3 15/16 3.862 4.014 3.15 3.22 0.62 0.71