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