ASME B18.2.2 Large Hex Flange Nuts

ASME B18.2.2 Large Hex Flange Nuts

Dimensions of Large Hex Flange Nuts

Nominial Size Basic Major Diameter of Thread Width Across Flats, F Width Across Corners, G Diameter Flange, B Nut Thickness, H Maximum Wrenching Length, J Maximum Flange Thickness, K Maximum Runout of Bearing Surface to Thread Axis, FLM
Min. Max. Min. Max. Min. Max. Min. Max.
1/4 0.2500 0.428 0.438 0.488 0.505 0.700 0.728 0.281 0.312 0.15 0.04 0.024
5/16 0.3125 0.489 0.500 0.557 0.577 0.790 0.820 0.343 0.375 0.20 0.04 0.028
3/8 0.3750 0.551 0.562 0.628 0.650 0.885 0.915 0.390 0.406 0.24 0.04 0.031
7/16 0.4375 0.675 0.688 0.768 0.794 1.100 1.131 0.437 0.468 0.26 0.04 0.038
1/2 0.5000 0.736 0.750 0.840 0.866 1.175 1.205 0.485 0.515 0.29 0.06 0.041
9/16 0.5625 0.861 0.875 0.982 1.010 1.260 1.300 0.546 0.578 0.37 0.06 0.044
5/8 0.6250 0.922 0.938 1.051 1.083 1.280 1.360 0.600 0.640 0.42 0.06 0.045