... mild steel carriage bolt 1.ISO 9001.2000 2.grade: 4.6-10.9 bolt 3. Surface: plain ,zp ,HDG 4.mild steel grade ... of delivery:FOBshanghai Grade 2 Carriage Bolt 1. Material: Steel 2. Size: M5-M20 / 1/4"-3/4" 3. Specification: DIN603, DIN604, DIN608, ASME ... , ASTM, IFI, JIS, ASMaterialLow carbon steel etc.SizeM5-M64,1/4”-3/4”Length4mm-300mm, 1/8”-12”ThreadMetric, UNC, , BSWFinishPlain, Galvanized, Black, H ...