ASME B18.2.2 Slotted Hex Nuts

ASME B18.2.2 Slotted Hex Nuts

Dimensions of Imperial Slotted Hex 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 7/16 0.428 0.438 0.488 0.505 7/32 0.212 0.226 0.120 0.140 0.07 0.10
5/16 0.3125 1/2 0.489 0.500 0.557 0.577 17/64 0.258 0.273 0.160 0.180 0.09 0.12
3/8 0.3750 9/16 0.551 0.562 0.628 0.650 21/64 0.320 0.337 0.190 0.210 0.12 0.15
7/16 0.4375 11/16 0.675 0.688 0.768 0.794 3/8 0.365 0.385 0.210 0.230 0.12 0.15
1/2 0.5000 3/4 0.736 0.750 0.840 0.866 7/16 0.427 0.448 0.270 0.290 0.15 0.18
9/16 0.5625 7/8 0.861 0.875 0.982 1.010 31/64 0.473 0.496 0.290 0.310 0.15 0.18
5/8 0.6250 15/16 0.922 0.938 1.051 1.083 35/64 0.535 0.559 0.320 0.340 0.18 0.24
3/4 0.7500 1 1/8 1.088 1.125 1.240 1.299 41/64 0.617 0.665 0.380 0.400 0.18 0.24
7/8 0.8750 1 5/16 1.269 1.312 1.447 1.516 3/4 0.724 0.776 0.490 0.520 0.18 0.24
1 1.0000 1 1/2 1.450 1.500 1.653 1.732 55/64 0.831 0.887 0.560 0.590 0.24 0.30
1 1/8 1.1250 1 11/16 1.631 1.688 1.859 1.949 31/32 0.939 0.999 0.610 0.640 0.24 0.33
1 1/4 1.2500 1 7/8 1.812 1.875 2.066 2.165 1 1/16 1.030 1.094 0.670 0.700 0.31 0.40
1 3/8 1.3750 2 1/1 1.994 2.062 2.273 2.382 1 11/64 1.138 1.206 0.780 0.820 0.31 0.40
1 1/2 1.5000 2 1/4 2.175 2.250 2.480 2.598 1 9/32 1.245 1.317 0.820 0.860 0.37 0.46