Spring Lock Washer Spring Washer No. 2
:
SUNCO
A portion of the flat washer is cut off, with a twisted shape. This twisted shape helps prevent loosening or falling if it is loosened. No. 2 is the most widely available type of spring washer.
Drawing
Specifications Table
| Nominal | Inner diameter (d) | Outer diameter (D) Max. | Width (b) x Thickness (t) | |||
|---|---|---|---|---|---|---|
| For metric thread | For Whitworth thread | Reference dimension | Tolerance | |||
| 2 | — | 2.1 | +0.25 0 | 4.4 | 0.9 | 0.5 |
| 2.3 | — | 2.4 | 4.9 | 1 | 0.6 | |
| 2.5 | — | 2.6 | +0.3 0 | 5.2 | 1 | 0.6 |
| 2.6 | — | 2.7 | 5.3 | 1 | 0.6 | |
| 3 | — | 3.1 | 5.9 | 1.1 | 0.7 | |
| 3.5 | — | 3.6 | 6.6 | 1.2 | 0.8 | |
| 4 | — | 4.2 | +0.4 0 | 7.6 | 1.4 | 1 |
| 5 | — | 5.1 | 9.2 | 1.7 | 1.3 | |
| 6 | — | 6.1 | 12.2 | 2.7 | 1.5 | |
| — | 1/4 | 6.5 | 12.5 | 2.8 | 1.6 | |
| 7 | — | 7.1 | 13.4 | 2.8 | 1.6 | |
| 8 | 5/16 | 8.2 | +0.5 0 | 15.4 | 3.2 | 2 |
| — | 3/8 | 9.8 | 17.8 | 3.6 | 2.4 | |
| 10 | — | 10.2 | 18.4 | 3.7 | 2.5 | |
| — | 7/16 | 11.4 | 20.2 | 4 | 2.8 | |
| 12 | — | 12.2 | +0.6 0 | 21.5 | 4.2 | 3 |
| — | 1/2 | 13 | 22.7 | 4.4 | 3.2 | |
| 14 | — | 14.4 | 24.7 | 4.7 | 3.5 | |
| 16 | 5/8 | 16.2 | +0.8 0 | 28 | 5.2 | 4 |
| 18 | — | 18.2 | 31 | 5.7 | 4.6 | |
| — | 3/4 | 19.5 | 32.7 | 5.9 | 4.8 | |
| 20 | — | 20.2 | 33.8 | 6.1 | 5.1 | |
| 22 | 7/8 | 22.5 | +1.0 0 | 37.7 | 6.8 | 5.6 |
| 24 | — | 24.5 | +1.0 0 | 40.3 | 7.1 | 5.9 |
| — | 1" | 26 | 42.8 | 7.5 | 6.4 | |
| 27 | — | 27.5 | +1.2 0 | 45.3 | 7.9 | 6.8 |
| — | 1"-1/8 | 29.3 | 47.9 | 8.3 | 7.1 | |
| 30 | — | 30.5 | 49.9 | 8.7 | 7.5 | |
| — | 1"-1/4 | 32.5 | 52.7 | 9.1 | 7.9 | |
| 33 | — | 33.5 | +1.4 0 | 54.7 | 9.5 | 8.2 |
| — | 1"-3/8 | 35.8 | 57.8 | 9.9 | 8.7 | |
| 36 | — | 36.5 | 59.1 | 10.2 | 9 | |
| 39 | 1"-1/2 | 39.5 | 63.1 | 10.7 | 9.5 | |
| 42 | — | 45 | +0 -1.4 | 65 | 10 | 8 |
| 45 | — | 48 | +0 -1.5 | 72 | 12 | 9 |
| 48 | — | 51 | 75 | 12 | 9 | |
| 52 | — | 55 | 79 | 12 | 9 | |
| 56 | — | 60 | +0 -2.0 | 85 | 12 | 9 |
| 60 | — | 63 | 88 | 12 | 9 | |
| 64 | — | 68 | +0 -3.0 | 92 | 12 | 9 |
| 68 | — | 72 | 96 | 12 | 9.2 | |
| 72 | — | 76 | 100 | 12 | 9.2 | |
| 76 | — | 80 | 106 | 12.6 | 9.2 | |
| 80 | — | 85 | +0 4.0 | 111 | 12.6 | 9.2 |
| 90 | — | 95 | 121 | 12.6 | 9.2 | |
| 100 | — | 105 | 131 | 12.6 | 9.2 | |