carriage bolt 1.material: stainless steel,brass 2.free sample 3. ... 5.certification: SGS,Rohs din 603 zinc plated grade 8 carriage bolt in hardwarematerial:steel ,stainless steel,brass,alloy ... IFI, JIS, ASMaterialLow carbon steel etc.SizeM5-M64,1/4”-3/4”Length3mm-160mm, 1/8”-12”ThreadMetric, UNC, , BSWFinishPlain, Galvanized, Black ... ASME B18.5 etc. din 603 zinc plated grade 8 carriage bolt in hardware