| Size | A | B | C | Mass(g) | Part No |
| M3 | 3.2 | 7 | 0.5 | 0.4 | FW-32-07-03 |
| M4 | 4.5 | 9 | 0.8 | 0.6 | FW-45-09-04 |
| M5 | 5.3 | 10 | 0.8 | 0.9 | FW-53-10-05 |
| M6 | 6.4 | 12.5 | 1.5 | 1 | FW-64-12-06 |
| M8 | 8.4 | 17 | 1.5 | 1.1 | FW-84-17-08 |
| M10 | 10.5 | 21 | 2 | 1.3 | FW-10-21-10 |
| M12 | 13 | 24 | 2 | 1.6 | FW-13-24-12 |
Flat washer
Material: Stainless steel
Surface Treatment: Natural
