Product name:Hex bolt Diameter is M20, M22, M24, 3/8-1/8 Length ... : 8.8, 10.9, GR2, GR5, GR Finish: HDG Hex bolt (1)Product nameHex bolt(2)Diameter is M20, M22, M24, 3/8-1 ... ,Zinc platedproduce bolts Square head track bolt ,railway bolt, steel structuebolt with nut , hex cap bolt auto bolt ,T-boltsheavy hexagonal bolt, heavy hex machine bolt ,carrige bolt etc. Hex bolt