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 | |||