U-Bolt M24 x75mm Thread, 461mm Inside Diam, 528mm Inside Height Galvanised Includes two nuts per leg Conforms to British Standard 3974 PART 1: 1974 Fig 11A. Gripped U-bolt (Anchor) Use where it is necessary to grip the pipe in all directions Galvanised - A duller finish than BZP, typically 50 microns thick covering of Zinc and therefore provides much more protection suitable for many out door applications All Measurements in mm Inside Diameter : 461 Inside Height : 528 Leg Centers : 485 Leg Length : 298 Material : Galvanised Pipe Nominal Bore : 450 Suggested Pipe OD : 457 Thread length : 75 Thread Size : M24 Our manufacturing tolerances are + / - 1 mm) We use roll threading so the diameter of the bar is usually less than the thread size. Please ask if unsure If using your own nuts on galvanised products please ensure they are tapped oversize to allow for the galvanised layer