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Hex Sems Bolt (S type)
| Bolt | |
| Material | Structural alloy steel |
| Strength type | 10.9 |
| Precision | JIS 6G |
| - | Washer |
| Spring washer | In accordance with JIS B 1251 Type 2, except for different inside and outside diameter. |
| Flat washer | In accordance with JIS B 1256-1978 grinding bar, except for different inside and outside diameter. |
| Surface treatment | Black oxide coating |
