ISO 7091 dimensions — Plain washers, Normal series, Product grade C
- Edition
- 2000 edition, current
| Size | d1Inner diameter | d2Outer diameter | hWasher thickness | ||||
|---|---|---|---|---|---|---|---|
| max | min | min | max | ||||
| M1.6 | 1.8 | 2.05 | 4 | 3.25 | 0.3 | 0.2 | 0.4 |
| M2 | 2.4 | 2.65 | 5 | 4.25 | 0.3 | 0.2 | 0.4 |
| M2.5 | 2.9 | 3.15 | 6 | 5.25 | 0.5 | 0.4 | 0.6 |
| M3 | 3.4 | 3.7 | 7 | 6.1 | 0.5 | 0.4 | 0.6 |
| M3.5 | 3.9 | 4.2 | 8 | 7.1 | 0.5 | 0.4 | 0.6 |
| M4 | 4.5 | 4.8 | 9 | 8.1 | 0.8 | 0.6 | 1 |
| M5 | 5.5 | 5.8 | 10 | 9.1 | 1 | 0.8 | 1.2 |
| M6 | 6.6 | 6.96 | 12 | 10.9 | 1.6 | 1.3 | 1.9 |
| M8 | 9 | 9.36 | 16 | 14.9 | 1.6 | 1.3 | 1.9 |
| M10 | 11 | 11.43 | 20 | 18.7 | 2 | 1.7 | 2.3 |
| M12 | 13.5 | 13.93 | 24 | 22.7 | 2.5 | 2.2 | 2.8 |
| M14 | 15.5 | 15.93 | 28 | 26.7 | 2.5 | 2.2 | 2.8 |
| M16 | 17.5 | 17.93 | 30 | 28.7 | 3 | 2.4 | 3.6 |
| M18 | 20 | 20.43 | 34 | 32.4 | 3 | 2.4 | 3.6 |
| M20 | 22 | 22.52 | 37 | 35.4 | 3 | 2.4 | 3.6 |
| M22 | 24 | 24.52 | 39 | 37.4 | 3 | 2.4 | 3.6 |
| M24 | 26 | 26.52 | 44 | 42.4 | 4 | 3.4 | 4.6 |
| M27 | 30 | 30.52 | 50 | 48.4 | 4 | 3.4 | 4.6 |
| M30 | 33 | 33.62 | 56 | 54.1 | 4 | 3.4 | 4.6 |
| M33 | 36 | 37 | 60 | 58.1 | 5 | 4 | 6 |
| M36 | 39 | 40 | 66 | 64.1 | 5 | 4 | 6 |
| M39 | 42 | 43 | 72 | 70.1 | 6 | 5 | 7 |
| M42 | 45 | 46 | 78 | 76 | 8 | 6.8 | 9.2 |
| M45 | 48 | 49 | 85 | 82.8 | 8 | 6.8 | 9.2 |
| M48 | 52 | 53.2 | 92 | 89.8 | 8 | 6.8 | 9.2 |
| M52 | 56 | 57.2 | 98 | 95.8 | 8 | 6.8 | 9.2 |
| M56 | 62 | 63.2 | 105 | 102.8 | 10 | 8.8 | 11.2 |
| M60 | 66 | 67.2 | 110 | 107.8 | 10 | 8.8 | 11.2 |
| M64 | 70 | 71.2 | 115 | 112.8 | 10 | 8.8 | 11.2 |
Dimensions from ISO 7091:2000, the current edition.