460pcs 12.9 grade black carbon steel knurled socket head cap screw set, DIN912 M3 M4 M5 M6 nuts and washers, for machinery.

Head Style：Socket High-concerned chemical：None Model Number：460pcs DIY Supplies：Metalworking Origin：Mainland China Item Type：Nut & Bolt Sets

High-concerned chemical: None Model Number: 460pcs DIY Supplies: Metalworking Origin: Mainland China Item Type: Nut & Bolt Sets