Standard U-Bolt, Standard U-Bolt, Steel, Finish Hot Dipped Galvanized, Thread Size 5/8 In. -11, Thread Length 3 3/4 in, Inside Length 11 1/8 in, Inside Width 8 3/4 in, Pipe Size (In. ) 8 in, Characteristics ASME B 18.2. 2- ASTM A563 Grade A, Includes (4) Nuts