M24 Galvanised Hexagon Nut - Grade 8 - Din 934 Tapped Oversize Since hot-dip galvanizing typically adds 2.2 to 5 mils of thickness to the threaded portion of a fastener, galvanized heavy hex nuts are tapped oversize to compensate for the corrosion resistant coating on the thread of the bolt Where: e = point to point m = thickness s = across flats d = Thread e - 39.55 mm (min) m - 17.7 mm (min) s - 36 d - M24 Thread Pitch - 3.00 mm DIN934