AW-HB25 Steel hammer bolt 20/12 custom steel bolts

Hammerhead bolts, Steel T-bolts, To drawing bolts

Size：M6, M8, M10, M12

Material：Carbon Steel, Steel class 4.6/4.8/5.6/6.8/8.8/9.8/10.9/12.9

​​Surface Treatment：Zinc plated Cr3+(blue,yellow, black, green), Plain, Black ,Hot-dipped galvanized

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