carriage bolt STANDARD:DIN601,IFI C-40,ASTM CARRIAGE BOLT, BSW CARRIAGE BOLT carriage bolt2)standard:DIN601,IFI C-40,ASTM CARRIAGE BOLT, BSW CARRIAGE BOLT3)size:m6-m50,length:15mm-300mm4)class: 4.8,8.8,10.85)surface:plain, black,H.D.G,ZINC,DACROMET6)material: stainless steel ,alloy steel,carbon steel7)package:bulk packing,small boxes,pocket. carriage bolt