U-Bolt, Round Bend, Steel, Finish Hot Dipped Galvanized, Thread Size 1/2 In.-13, Thread Length 1 1/2 in, Inside Length 6 in, Inside Width 4 1/2 in, Pipe Size (In.) 4 in, Characteristics ASME B18.2.2- ASTM A563 Grade A, Includes (2) Nuts for Every (1) Bolt, Package Quantity 5