Standard U-Bolt with Mounting Plate U-Bolt with Mounting Plates 304 Stainless Steel Finish Plain Thread Size 5/16 In.-18 Thread Length 1 in Inside Length 3 11/16 in Inside Width 3 in Pipe Size (In.) 2 1/2 in Characteristics Has Coarse Rolled Threads for Steel or Wrought Iron Pipe Sizes Includes 1 Plate and 2 Nuts Package Quantity 10