DINwashers
DIN 127 Spring Lock Washer — Square Section
A split helical spring washer intended to resist loosening. Worth knowing that independent testing has repeatedly found its locking effect is marginal once the joint is properly preloaded — for safety critical joints use a prevailing torque nut instead.
Dimensions11 sizes · millimetres
| Nominal size | Inside diameter d1 (mm) | Section s (mm) | Free height h (mm) |
|---|---|---|---|
| M3 | 3.1 | 0.8 | 1.6 |
| M4 | 4.1 | 0.9 | 1.8 |
| M5 | 5.1 | 1.2 | 2.4 |
| M6 | 6.1 | 1.6 | 3.2 |
| M8 | 8.1 | 2 | 4 |
| M10 | 10.2 | 2.2 | 4.4 |
| M12 | 12.2 | 2.5 | 5 |
| M14 | 14.2 | 3 | 6 |
| M16 | 16.2 | 3.5 | 7 |
| M20 | 20.2 | 4 | 8 |
| M24 | 24.5 | 5 | 10 |
Nominal dimensions in millimetres as published in DIN 127. Tolerances, material requirements and marking are defined separately by the issuing body.
Available sizeslinked to individual specification pages
M10
M12
M14
M16
M20
M24