Standard U-Bolt Standard U-Bolt 316 Stainless Steel Finish Plain Thread Size 1/2 In.-13 Thread Length 2 1/2 in Inside Length 3 3/4 in Length (In.) 5 3/4 in Inside Width 3 in Pipe Size (In.) 2 1/2 in Characteristics UL and ASTM F593 Standards Includes (4) 316 Stainless Steel Hex Nuts