BS 4464A Metric Spring Washers Type A
Dimensions of Metric Spring Washers Type A (Single Coil, Square Section)
| Nom Size | ø D1 | ø D2 | T | Radius, R | ||
|---|---|---|---|---|---|---|
| Max | Min | Max | Max | Min | Max | |
| M3 | 3.3 | 3.1 | 5.5 | 1.1 | 0.9 | 0.3 |
| M3.5 | 3.8 | 3.6 | 6.0 | 1.1 | 0.9 | 0.3 |
| M4 | 4.35 | 4.1 | 6.95 | 1.3 | 1.1 | 0.4 |
| M5 | 5.35 | 5.1 | 8.55 | 1.6 | 1.4 | 0.5 |
| M6 | 6.4 | 6.1 | 9.6 | 1.6 | 1.4 | 0.5 |
| M8 | 8.55 | 8.2 | 12.75 | 2.1 | 1.9 | 0.65 |
| M10 | 10.6 | 10.2 | 15.9 | 2.65 | 2.35 | 0.8 |
| M12 | 12.6 | 12.2 | 17.9 | 2.65 | 2.35 | 0.8 |
| M14 | 14.7 | 14.2 | 21.1 | 3.2 | 2.8 | 1.0 |
| M16 | 16.9 | 16.3 | 24.3 | 3.7 | 3.3 | 1.15 |
| M18 | 19.0 | 18.3 | 26.4 | 3.7 | 3.3 | 1.15 |
| M20 | 21.1 | 20.3 | 30.5 | 4.7 | 4.3 | 1.5 |
| M22 | 23.3 | 22.4 | 32.7 | 4.7 | 4.3 | 1.5 |
| M24 | 25.3 | 24.4 | 35.7 | 5.2 | 4.8 | 1.65 |
| M27 | 28.5 | 27.5 | 38.9 | 5.2 | 4.8 | 1.65 |
| M30 | 31.5 | 30.5 | 43.9 | 6.2 | 5.8 | 2.0 |
| M33 | 34.6 | 33.5 | 47.0 | 6.2 | 5.8 | 2.0 |
| M36 | 37.6 | 36.5 | 52.1 | 7.25 | 6.75 | 2.3 |
| M39 | 40.8 | 39.6 | 55.3 | 7.25 | 6.75 | 2.3 |
| M42 | 43.8 | 42.6 | 60.3 | 8.25 | 7.75 | 2.65 |
| M45 | 46.8 | 45.6 | 63.3 | 8.25 | 7.75 | 2.65 |
| M48 | 50.0 | 48.8 | 66.5 | 8.25 | 7.75 | 2.65 |