M3-M12 carbon steel galvanized carriage bolt round head square neck bolt high-strength bridge screw
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| Surface treatment | Galvanized |
| brand | Jin Shun |
| product grade | A-level |
| Material | Plain carbon steel |
| Length grouping | 0~150 |
| Usage | standard |
| Standard Number | GB |
| strength grade | Level 12.9 |
| Applicable Industries | Other |
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