ASTM A563

Heavy Hex Nut

ASTM A563

Dimensions

A 563-M Nut Dimensions Classes 8S & 10S
Nominal Size and Thread Pitch   d s e m dw c Total 
Width Across Flats Width Across Corners Thickness Bearing Washer Face Thickness  runout of  bearing surface
Face Diameter  
M16 x 2 Max Min Max Min Max Min Min Max  Min Max
27 26.16 31.18 29.56 17.1 16.4 24.9 0.8 0.4 0.47
M20 x 2.5 34 33 39.26 37.29 20.7 19.4 31.4 0.8 0.4 0.58
M22 X 2.5 36 35 41.57 39.55 23.6 22.3 33.3 0.8 0.4 0.63
M24 X 3 41 41 47.34 45.2 24.2 22.9 38 0.8 0.4 0.72
M27 X 3 46 46 53.12 50.85 27.6 26.3 42.8 0.8 0.4 0.8
M30 X 3.5 50 50 57.74 55.37 30.7 29.1 46.6 0.8 0.4 0.87
M36 X 4 60 60 69.28 66.44 36.6 35 55.9 0.8 0.4 1.05
The maximum value of dw shall not exceed the  actual width across flats.

All data for information purpose only. For more details on product standards or dimensions, please feel free to contact us at centuryboltcentre@gmail.com