Counter Sunk Bolt
DIN, GB, ANSI, JIS
3mm-110mm Aviliable
Hot-Working
Cold Pier + Thread Rollered
Caliper,Hardness Testor,Salt Spray Machine
Ab/a/B/Bp/C/D/F/G/T/Bf/Bt/U/Triangular Thread
4h,6h,6g
5h,6h,7h
1A,2A,3A
1b,2b,3b
Common or or as Customers' Request