U-Bolt M16 x 128 mm Thread, 194 mm Inside Diam, 277 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 : 194 Inside Height : 277 Leg Centers : 210 Leg Length : 180 Material : Galvanised Pipe Nominal Bore : Suggested Pipe OD : 192 Thread length : 128 Thread Size : M16 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