U-Bolt M8 x50 mm Thread, 32 mm Inside Diam, 67 mm Inside Height Galvanised Includes two nuts per leg Graphskill standard U-Bolt 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 : 32 Inside Height : 67 Leg Centers : 40 Leg Length : 51 Material : High Tensile Galvanised (HTGA) Pipe Nominal Bore : Suggested Pipe OD : 30 Thread length : 50 Thread Size : M8 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