Description:
Material: Carbon Steel (Grade 8.8) with Black Oxide Coating
Type: Split (Open-End) Lock Washer / Heavy-Duty Spring Washer
Function: Prevents loosening, provides spring tension, and resists vibration
Applications: Automotive, machinery, construction, and industrial fastening
Specifications:
Standard: DIN 127 / ISO 7080 (Equivalent)
Grade: 8.8 (High Tensile Strength)
Finish: Black Oxide
Thickness: Heavy-Duty (Enhanced Elasticity & Load Capacity)
Size Range: M2, M3, M4, M5, M6, M8, M10 up to M36
Key Features:
Secure Anti-Loosening: Split design bites into surfaces for vibration resistance.
High Strength: 8.8-grade steel ensures durability under high tension.
Corrosion Protection: Black oxide finish offers basic rust resistance.
Wide Compatibility: Covers small (M2) to large (M36) metric bolts.
Package include:According to your choice.
Note: The following data are all single batch manual measurement results with positive and negative tolerances. Please refer to the actual data. Those who are interested should be careful to take photos! ! |
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| Nominal diameter | Washer inner diameter d | Washer thickness h | Washer width n | Total washer thickness H | |||||
| min | max | Nominal | min | max | min | max | min | max | |
| 2 | 2.10 | 2.30 | 0.60 | 0.52 | 0.68 | 0.52 | 0.68 | 1.20 | 1.50 |
| 2.5 | 2.60 | 2.80 | 0.80 | 0.70 | 0.90 | 0.70 | 0.90 | 1.60 | 2.10 |
| 3 | 3.10 | 3.30 | 1.00 | 0.90 | 1.10 | 0.90 | 1.10 | 2.00 | 2.60 |
| 4 | 4.10 | 4.40 | 1.20 | 1.10 | 1.30 | 1.10 | 1.30 | 2.40 | 3.00 |
| 5 | 5.10 | 5.40 | 1.60 | 1.50 | 1.70 | 1.50 | 1.70 | 3.20 | 4.00 |
| 6 | 6.20 | 6.70 | 2.00 | 1.90 | 2.10 | 1.90 | 2.10 | 4.00 | 5.00 |
| 8 | 8.20 | 8.70 | 2.50 | 2.35 | 2.65 | 2.35 | 2.65 | 5.00 | 6.50 |
| 10 | 10.20 | 10.70 | 3.00 | 2.85 | 3.15 | 2.85 | 3.15 | 6.00 | 8.00 |
| 12 | 12.30 | 12.80 | 3.50 | 3.30 | 3.70 | 3.30 | 3.70 | 7.00 | 9.00 |
| 14 | 14.30 | 14.90 | 4.00 | 3.80 | 4.20 | 3.80 | 4.20 | 8.00 | 10.50 |
| 16 | 16.30 | 16.90 | 4.00 | 3.80 | 4.20 | 3.80 | 4.20 | 8.00 | 10.50 |
| 18 | 18.30 | 19.10 | 4.50 | 4.30 | 4.70 | 4.30 | 4.70 | 9.00 | 11.50 |
| 20 | 20.50 | 21.30 | 5.00 | 4.80 | 5.20 | 4.80 | 5.20 | 10.00 | 13.00 |
| 22 | 22.50 | 23.30 | 5.00 | 4.80 | 5.20 | 4.80 | 5.20 | 10.00 | 13.00 |
| 24 | 24.50 | 25.50 | 6.00 | 5.80 | 6.20 | 5.80 | 6.20 | 12.00 | 15.00 |
| 27 | 27.50 | 28.50 | 6.00 | 5.80 | 6.20 | 5.80 | 6.20 | 12.00 | 15.00 |
| 30 | 30.50 | 31.50 | 6.50 | 6.20 | 6.80 | 6.20 | 6.80 | 13.00 | 17.00 |
| 36 | 36.60 | 37.80 | 7.00 | 6.70 | 7.30 | 6.70 | 7.30 | 14.00 | 18.00 |
| 42 | 42.60 | 43.80 | 8.00 | 7.70 | 8.30 | 7.70 | 8.30 | 16.00 | 21.00 |
| 48 | 49.00 | 50.20 | 8.00 | 8.70 | 9.30 | 8.70 | 9.30 | 18.00 | 23.00 |
