BS 4464 Rectangular Double Coil Section Spring Washers
| Nom. Size, d | Inside Dia., d 1 | Width,b | Thickness, s | O.D., d2 Max | Radius, r Max | |
|---|---|---|---|---|---|---|
| Max | Min | |||||
| BS 4464 - M2 | 2.4 | 2.1 | 0.9 ±0.1 | 0.5 ±0.05 | 4.4 | 0.15 |
| BS 4464 - M2.2 | 2.6 | 2.3 | 1.0 ±0.1 | 0.6 ±0.05 | 4.8 | 0.2 |
| BS 4464 - M2.5 | 2.9 | 2.6 | 1.2 ±0.1 | 0.6 ±0.06 | 5.5 | 0.23 |
| BS 4464 - M3.0 | 3.6 | 3.3 | 1.2 ±0.1 | 0.6 ±0.07 | 6.2 | 0.25 |
| BS 4464 - M3.5 | 4.1 | 3.8 | 1.6 ±0.1 | 0.6 ±0.08 | 7.5 | 0.25 |
| BS 4464 - M4 | 4.6 | 4.3 | 1.6 ±0.1 | 0.6 ±0.09 | 8 | 0.25 |
| BS 4464 - M5 | 5.6 | 5.3 | 2 ±0.1 | 0.6 ±0.10 | 9.8 | 0.3 |
| BS 4464 - M6 | 6.6 | 6.3 | 3 ±0.15 | 0.6 ±0.11 | 12.9 | 0.33 |
| BS 4464 - M8 | 8.8 | 8.4 | 3 ±0.15 | 0.6 ±0.12 | 15.1 | 0.4 |
| BS 4464 - M10 | 10.8 | 10.4 | 3.5 ±0.2 | 0.6 ±0.13 | 18.2 | 0.4 |
| BS 4464 - M12 | 12.8 | 12.4 | 3.5 ±0.2 | 0.6 ±0.14 | 20.2 | 0.5 |
| BS 4464 - M14 | 15 | 14.5 | 5 ±0.2 | 0.6 ±0.15 | 25.4 | 0.5 |
| BS 4464 - M16 | 17 | 16.5 | 5 ±0.2 | 0.6 ±0.16 | 27.4 | 0.65 |
| BS 4464 - M18 | 19 | 18.5 | 5 ±0.2 | 0.6 ±0.17 | 29.4 | 0.65 |
| BS 4464 - M20 | 21.5 | 20.8 | 5 ±0.2 | 0.6 ±0.18 | 31.9 | 0.65 |
| BS 4464 - M22 | 23.5 | 22.8 | 6 ±0.2 | 0.6 ±0.19 | 35.9 | 0.8 |
| BS 4464 - M24 | 26 | 25 | 6.5 ±0.2 | 0.6 ±0.20 | 39.4 | 1.1 |
| BS 4464 - M27 | 29.5 | 28 | 7 ±0.25 | 0.6 ±0.21 | 44 | 1.1 |
| BS 4464 - M30 | 33 | 31.5 | 8 ±0.25 | 0.6 ±0.22 | 49.5 | 1.1 |
| BS 4464 - M33 | 36 | 34.5 | 8 ±0.25 | 0.6 ±0.23 | 52.5 | 1.1 |
| BS 4464 - M36 | 40 | 38 | 10 ±0.25 | 0.6 ±0.24 | 60.5 | 1.1 |
| BS 4464 - M39 | 43 | 41 | 10 ±0.25 | 0.6 ±0.25 | 63.5 | 1.1 |
| BS 4464 - M42 | 46 | 44 | 10 ±0.25 | 0.6 ±0.26 | 66.5 | 1.5 |
| BS 4464 - M48 | 52 | 50 | 10 ±0.25 | 0.6 ±0.27 | 72.5 | 1.5 |
| BS 4464 - M56 | 60 | 58 | 12 ±0.25 | 0.6 ±0.28 | 84.5 | 1.5 |
| BS 4464 - M64 | 70 | 67 | 12 ±0.25 | 0.6 ±0.29 | 94.5 | 1.5 |
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