Standard U-Bolt, Standard U-Bolt, Steel, Finish Zinc-Plated, Thread Size 3/4 In. -10, Thread Length 4 in, Inside Length 13 13/16 in, Inside Width 10 7/8 in, Pipe Size (In. ) 10 in, Characteristics ASME B 18.2. 2- ASTM A563, Grade A, Includes (4) Nuts