... plain ,zp ,HDG 4.mild steel grade 4.6-10.9 CARRIAGE BOLT MUSHROOM HEAD SHORT SQUARE NECK BOLTS1).Diameter range ... 4"-3/4" 3. Specification: DIN603, DIN604, DIN608, ASME B18.5 DescriptionGrade 2 Carriage BoltStandardDIN, ANSI, ASME, ASTM, IFI, JIS, ASMaterialLow carbon ... -300mm, 1/8”-12”ThreadMetric, UNC, , BSWFinishPlain, Galvanized, Black, H.D.GPackingCarton, Box, Bag, Pallet Shipment TermsFOB,C&F,CIF ...