HEAVY HEX HEAD BOLTS

THE FINISH:PLAIN PHOS PHINED,BLACK,Z/P,HDG,DACROMET

STANDARD:DIN6914/6915/6916，GB1228/1229/1230，

A325(A325M)/A563(563M)/F436(f436,M)/A490(A490M)/A563(A563M)/F436(F436M),JIS1180