Standard U-Bolt Standard U-Bolt Steel Finish Zinc Plated Thread Size 3/8 In.-16 Thread Length 1 1/8 in Inside Length 2 3/4 in Inside Width 1 3/4 in Pipe Size (In.) 1 1/4 in Characteristics ASME B18.2.2- ASTM A563 Grade A Includes (2) Nuts Package Quantity 10