DIN 137A Curved Spring Washer
DIN 137A Curved Spring Washers , also known as External teeth Serrated Washers, serrated lock washer. We’re professional Serrated Washer manufacturer in China.
Standard: DIN 137A
Material: Spring Steel 65Mn
Finish: Zinc plated, Black oxide
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| Size | d1 | d2 | s |
|---|---|---|---|
| M3 | 3.2 | 6 | 0.4 |
| M4 | 4.3 | 8 | 0.5 |
| M5 | 5.3 | 10 | 0.5 |
| M6 | 6.4 | 11 | 0.5 |
| M8 | 8.4 | 15 | 0.5 |
| M10 | 10.5 | 18 | 0.8 |