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BS 4395 Nobe Washer (M Mark)

Washer Dimensions in mm
Dimensions of 300HV Steel Washers with inner chamfer
Nominal Size d Inside Dia. B Outside Dia. C Thickness A
Max Min Max Min Max Min
M12 13.8 13.4 30 29 2.8 2.4
M16 17.8 17.4 37 36 3.4 3.0
M20 21.5 21.1 44 43 3.7 3.3
M22 23.4 23.0 50 48.5 4.2 3.8
M24 26.4 26.0 56 54.5 4.2 3.8
M27 29.4 29.0 60 58.5 4.2 3.8
M30 32.8 32.4 66 64.5 4.2 3.8
M36 38.8 38.4 85 83.5 4.6 4.2