ASME B18.2.2 Hex Flange Nuts

ASME B18.2.2 Hex Flange Nuts

Dimensions of Hex Flange Nuts to ASME B18.2.2 Standard

Nominal Size
Inch
Basic Major
Thread Diameter
Width Across Flats, F Width Across Corners, G Diameter Flange, B Nut Thickness, H Maximum Wrenching Length, J Maximum Flange Thickness, K
Min. Max. Min. Max. Min. Max. Min. Max.
#6 0.1380 0.302 0.312 0.342 0.361 0.406 0.422 0.156 0.171 0.10 0.02
#8 0.1640 0.334 0.344 0.381 0.397 0.452 0.469 0.187 0.203 0.13 0.02
#10 0.1900 0.365 0.375 0.416 0.433 0.480 0.500 0.203 0.219 0.13 0.03
#12 0.2160 0.428 0.438 0.488 0.505 0.574 0.594 0.222 0.236 0.14 0.04
1/4 0.2500 0.428 0.438 0.488 0.505 0.574 0.594 0.222 0.236 0.14 0.04
5/16 0.3125 0.489 0.500 0.557 0.577 0.660 0.680 0.268 0.283 0.17 0.04
3/8 0.3750 0.551 0.562 0.628 0.650 0.728 0.750 0.330 0.347 0.23 0.04
7/16 0.4375 0.675 0.688 0.768 0.794 0.910 0.937 0.375 0.395 0.26 0.04
1/2 0.5000 0.736 0.750 0.840 0.866 1.000 1.031 0.437 0.458 0.31 0.05
9/16 0.5625 0.861 0.875 0.982 1.010 1.155 1.188 0.483 0.506 0.35 0.05
5/8 0.6250 0.922 0.938 1.051 1.083 1.248 1.281 0.545 0.569 0.40 0.05
3/4 0.7500 1.088 1.125 1.240 1.299 1.460 1.500 0.627 0.675 0.46 0.06