... :T-bolts Diameter is M20, M22, M24, 3/8-1/8 Length is no limited, Grade: 8.8, 10.9, GR2, GR5 ... , GR Finish: HDG T-bolt (1)Product nameT-bolts(2)Diameter ... is M20, M22, M24, 3/8-1/8 Length is no limited.(3)Grade8.8, 10.9, GR2, GR5 ... -boltsheavy hexagonal bolt, heavy hex machine bolt ,carrige bolt etc. Hot Sell Zinc Plated Hex Bolts