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  5. ASME B18.2.2 Heavy Hex Nuts

ASME B18.2.2 Heavy Hex Nuts

ASME B18.2.2 Heavy Hex Nuts

Nominal Size A G H H1 Weight Per Pc
Width Across Flats Width Across Corners Thickness Hex Nut Thickness Jam Nut
Max Min Max Min Max Min Max Min
1/4" 12.7 12.4 14.65 14.13 6.35 5.54 4.77 3.97 0.005
5/16" 14.27 13.87 16.51 15.8 7.97 7.12 5.58 4.73 0.008
3/8" 17.47 17 20.16 19.39 9.57 8.67 6.4 5.49 0.01
7/16" 19.05 18.5 21.99 21.09 11.2 10.24 7.23 6.28 0.02
1/2" 22.22 21.59 25.65 24.62 12.8 11.79 8.05 7.04 0.03
9/16" 23.82 23.09 27.5 26.34 14.42 13.36 8.86 7.8 0.04
5/8" 26.97 26.19 31.16 29.85 16.02 14.91 9.67 8.56 0.05
3/4" 31.75 30.79 36.65 35.11 19.25 18.04 11.32 10.11 0.09
7/8" 36.52 35.41 42.16 40.37 22.47 21.16 12.95 11.64 0.13
1.0" 41.27 40.01 47.65 45.62 25.7 24.29 14.6 13.19 0.18
1 1/8" 46.02 44.61 53.16 50.86 28.93 27.41 16.23 14.71 0.25
1 1/4" 50.8 49.23 58.64 56.11 31.77 30.15 19.07 17.45 0.33
1 3/8" 55.57 53.83 64.16 61.37 35 33.28 20.7 18.98 0.43
1 1/2" 60.32 58.42 69.64 66.6 38.22 36.4 22.35 20.53 0.55
1 5/8" 65.07 63.02 75.15 71.84 41.45 39.53 23.97 22.05 0.71
1 3/4" 69.85 67.62 80.64 77.09 44.67 42.65 25.62 23.6 0.86
1 7/8" 74.62 72.24 86.15 82.35 47.9 45.78 27.25 25.13 1.05
2.0" 79.37 76.84 91.64 87.61 51.13 48.9 28.9 26.67 1.29
2 1/4" 88.9 86.06 102.64 98.1 57.17 54.74 31.77 29.34 1.82
2 1/2" 98.42 95.25 113.63 108.6 63.62 60.99 38.22 35.59 2.5
2 3/4" 107.95 104.45 124.63 119.08 70.07 67.24 41.5 38.66 3.18
3.0" 117.47 113.67 135.63 129.6 76.53 73.49 44.78 41.74 3.92
3 1/4" 127 122.89 146.65 140.09 82.6 79.35 47.65 44.4 4.86
3 1/2" 136.52 132.08 157.65 150.58 89.05 85.6 50.95 47.5 6.42
3 3/4" 146.05 141.28 168.65 161.07 95.5 91.85 54.2 50.55 7.8
4 " 155.57 150.5 179.65 171.58 101.95 98.1 57.5 53.65 9.77