GB 56 - 1988 Hexagon Thick Nuts


Unit: mm
Thread Size
d
M16 (M18) M20 (M22) M24 (M27) M30 M36 M42 M48
P Pitch
da max
min
dw min
e min
m Nominal Size
min
mw min
s max
min
per 1000 units ≈ kg
2 2.5 2.5 2.5 3 3 3.5 4 4.5 5
17.3 19.5 21.6 23.7 25.9 29.1 32.4 38.9 45.4 51.8
16 18 20 22 24 27 30 36 42 48
22.5 24.8 27.7 31.4 33.2 38 42.7 51.1 60.6 69.4
26.17 29.56 32.95 37.29 39.55 45.2 50.85 60.79 72.09 82.6
25 28 32 35 38 42 48 55 65 75
24.16 27.16 30.4 33.4 36.4 40.4 46.4 53.1 63.1 73.1
19.33 21.73 24.32 26.72 29.12 32.32 37.12 42.48 50.48 58.48
24 27 30 34 36 41 46 55 65 75
23.16 26.16 29.16 33 35 40 45 53.8 63.8 73.1
45.94 66.33 92.72 136.3 160 237.7 352.0 572.6 979.5 1495
Alternative history
GB /T 56 - 1988
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