Standard U-Bolt, Standard U-Bolt, Steel, Finish Hot Dipped Galvanized, Thread Size 1/2 In.-13, Thread Length 3 in, Inside Length 7 13/16 in, Inside Width 5 5/8 in, Pipe Size (In.) 5 in, Characteristics ASME B18.2.2- ASTM A563 Grade A, Includes (4) Nuts