Standard U-Bolt Standard U-Bolt 316 Stainless Steel Finish Plain Thread Size 3/8 In.-16 Thread Length 2 1/2 in Inside Length 3 1/4 in Length (In.) 4 1/8 in Inside Width 2 29/64 in Pipe Size (In.) 2 in Characteristics UL and ASTM F593 Standards Includes (4) 316 Stainless Steel Hex Nuts