General description U-Bolt M20 x 65mm Thread, designed for applications where longitudinal movement is necessary, such as allowing for vibration or thermal expansion. This non-gripped type U-bolt is suitable for various outdoor applications due to its galvanised finish, which provides enhanced protection. Technical specifications Thread Size: M20 Thread Length: 65 mm Inside Diameter: 255 mm Inside Height: 290 mm Leg Centers: 275 mm Leg Length: 163 mm Material: Galvanised Pipe Nominal Bore: 225 Suggested Pipe OD: 244.5 Galvanised Coating Thickness: 50 microns Manufacturing Tolerances: +/- 1 mm Other information Includes two nuts per leg Conforms to British Standard 3974 PART 1: 1974 Fig 10 If using your own nuts on galvanised products, ensure they are tapped oversize to accommodate the galvanised layer