Dongshuo
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| Nominal diameter | 2 | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | 14 | |
| d (mm) | Min | 2.1 | 2.6 | 3.1 | 4.1 | 5.1 | 6.2 | 8.2 | 10.2 | 12.3 | 14.3 |
| Max | 2.3 | 2.8 | 3.3 | 4.4 | 5.4 | 6.7 | 8.7 | 10.7 | 12.8 | 14.9 | |
| h (mm) | Nominal | 0.6 | 0.8 | 1 | 1.2 | 1.6 | 2 | 2.5 | 3 | 3.5 | 4 |
| Min | 0.52 | 0.7 | 0.9 | 1.1 | 1.5 | 1.9 | 2.35 | 2.85 | 3.3 | 3.8 | |
| Max | 0.68 | 0.9 | 1.1 | 1.3 | 1.7 | 2.1 | 2.65 | 3.15 | 3.7 | 4.2 | |
| H (mm) | Min | 1.2 | 1.6 | 2 | 2.4 | 3.2 | 4 | 5 | 6 | 7 | 8 |
| Max | 1.5 | 2.1 | 2.6 | 3 | 4 | 5 | 6.5 | 8 | 9 | 10.5 | |
| Weight (kg/1000pcs) | 0.023 | 0.053 | 0.097 | 0.182 | 0.406 | 0.745 | 1.53 | 2.82 | 4.63 | 6.85 | |
| Nominal diameter | 16 | 18 | 20 | 22 | 24 | 27 | 30 | 36 | 42 | 48 | |
| d (mm) | Min | 16.3 | 18.3 | 20.5 | 22.5 | 24.5 | 27.5 | 30.5 | 36.6 | 42.6 | 49 |
| Max | 16.9 | 19.1 | 21.3 | 23.3 | 25.5 | 28.5 | 31.5 | 37.8 | 43.8 | 50.2 | |
| h (mm) | Nominal | 4 | 4.5 | 5 | 5 | 6 | 6 | 6.5 | 7 | 8 | 9 |
| Min | 3.8 | 4.3 | 4.8 | 4.8 | 5.8 | 5.8 | 6.2 | 6.7 | 7.7 | 8.7 | |
| Max | 4.2 | 4.7 | 5.2 | 5.2 | 6.2 | 6.2 | 6.8 | 7.3 | 8.3 | 9.3 | |
| H (mm) | Min | 8 | 9 | 10 | 10 | 12 | 12 | 13 | 14 | 16 | 18 |
| Max | 10.5 | 11.5 | 13 | 13 | 15 | 15 | 17 | 18 | 21 | 23 | |
Spring washers provide an additional tightening force to help prevent the loosening of bolts or nuts due to vibration or other factors.
Spring washers reduce vibration in mechanical devices and decrease impact on connecting parts to protect them from damage.
With a high degree of elasticity, these washers disperse the tightening pressure, helping to protect the integrity of connecting parts.
They can be used to adjust the tightening force, ensuring that the connecting parts receive appropriate pressure for stability.
