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Sizes







Heavy Hex Nut Dimension
Heavy Hex Nut Side
Heavy Thin Hex Nut

Heavy Hex Nut Dimensions Table | Finished Hex Nut Dimensions

Heavy Hex Nut and Heavy Hex Jam Nut Dimensions
Nominal
Size		 F G H H1
Width 
Across
Flats		 Width
Across
Corners		 Thickness
Heavy Hex Nuts		 Thickness
Heavy Hex Jam Nuts
Basic Max Min Max Min Basic Max Min Basic Max Min
1/4 1/2 0.500 0.488 0.577 0.556 15/64 0.250 0.218 11/64 0.188 0.156
5/16 9/16 0.562 0.546 0.650 0.622 19/64 0.314 0.280 13/64 0.220 0.186
3/8 11/16 0.688 0.669 0.794 0.763 23/64 0.377 0.341 15/64 0.252 0.216
7/16 3/4 0.750 0.728 0.866 0.830 27/64 0.441 0.403 17/64 0.285 0.247
1/2 7/8 0.875 0.850 1.010 0.969 31/64 0.504 0.464 19/64 0.317 0.277
9/16 15/16 0.938 0.909 1.083 1.037 35/64 0.568 0.526 21/64 0.349 0.307
5/8 1 1/16 1.062 1.031 1.227 1.175 39/64 0.631 0.587 23/64 0.381 0.337
3/4 1 1/4 1.250 1.212 1.443 1.382 47/64 0.758 0.710 27/64 0.446 0.398
7/8 1 7/16 1.438 1.394 1.660 1.589 55/64 0.885 0.833 31/64 0.510 0.458
1 1 5/8 1.625 1.575 1.876 1.796 63/64 1.012 0.956 35/64 0.575 0.519
1 1/8 1 13/16 1.812 1.756 2.093 2.002 1 7/64 1.139 1.079 39/64 0.639 0.579
1 1/4 2 2.000 1.938 2.309 2.209 1 7/32 1.251 1.187 23/32 0.751 0.687
1 3/8 2 3/16 2.188 2.119 2.526 2.416 1 11/32 1.378 1.310 25/32 0.815 0.747
1 1/2 2 3/8 2.375 2.300 2.742 2.622 1 15/32 1.505 1.433 27/32 0.880 0.808
1 5/8 2 9/16 2.562 2.481 2.959 2.828 1 19/32 1.632 1.556 29/32 0.944 0.868
1 3/4 2 3/4 2.750 2.662 3.175 3.035 1 23/32 1.759 1.679 31/32 1.009 0.929
1 7/8 2 15/16 2.938 2.844 3.392 3.242 1 27/32 1.886 1.802 1 1/32 1.073 0.989
2 3 1/8 3.125 3.025 3.608 3.449 1 31/32 2.013 1.925 1 3/32 1.138 1.050
2 1/4 3 1/2 3.500 3.388 4.041 3.862 2 13/64 2.251 2.155 1 13/64 1.251 1.155
2 1/2 3 7/8 3.875 3.750 4.474 4.275 2 29/64 2.505 2.401 1 29/64 1.505 1.401
2 3/4 4 1/4 4.250 4.112 4.907 4.688 2 45/64 2.759 2.647 1 37/64 1.634 1.522
3 4 5/8 4.625 4.475 5.340 5.102 2 61/64 3.013 2.893 1 45/64 1.763 1.643
3 1/4 5 5.000 4.838 5.774 5.515 3 3/16 3.252 3.124 1 13/16 1.876 1.748
3 1/2 5 3/8 5.375 5.200 6.207 5.928 3 7/16 3.506 3.370 1 15/16 2.006 1.870
3 3/4 5 3/4 5.750 5.562 6.640 6.341 3 11/16 3.760 3.616 2 1/16 2.134 1.990
4 6 1/8 6.125 5.925 7.073 6.755 3 15/16 4.014 3.862 2 3/16 2.264 2.112



Releated References:
Screw Thread Limits Table
UNC UNF Threads Per Inch TPI Threads Per Inch
Wood Screw Pilot Hole Sizes Table
Standard NPT National Pipe Thread Tap Drill Sizes Table
ASTM ISO Metric Thread Sizes and Tap Drill Table
Metric Thread Size Tap Drill Table
Standard Tap Drills Clearance Holes Table
Standard Drill Sizes Decimal Equivalents Table
Socket Head Cap Screw Sizes Dimension Table
SAE Grade ASTM Bolt Identify Marks Mechanical Properties
Steel Bolt Torque Specifications Table
Finished Hex Nut Dimensions
Heavy Hex Nut Dimensions Table
Standard ANSI Type B Flat Washer Sizes

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