Material: Low Carbon Steel(Stainless Steel 304)
Hardness:
Others: white Nylon ring
Note: This product nylon plastic cover mainly for the black and white ， other colors need reservation.
All the fastener specifications of this website only show one part，if you need other specifications，you can call for.
| Specifications: | Across Flat (s): MIN / MAX | Thickness (m): MIN / MAX | Weight/pcs (g): |
| M4 | 6.8 / 7.0 | 9.4 / 9.6 | 0.95 |
| M5 | 7.8 / 8.0 | 10.3 / 10.8 | 1.3 |
| M6 | 9.8 / 10.0 | 12.0 / 12.4 | 2.67 |
| M8 | 12.8 / 13.0 | 14.0 / 14.4 | 4.84 |
| M10 | 16.8 / 17.0 | 17.8 / 18.2 | 11.20 |
| M12 | 18.8 / 19.0 | 22.0 / 22.5 | 16.2 |
| M14 | 21.5 / 22.0 | 26.0 / 26.5 | 23.6 |
| M16 | 23.5 / 24.0 | 27.0 / 27.5 | 29.3 |
