M6 Galvanised Heavy Hexagon Nut - A194 Grade 7 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 Quenched & tempered alloy steel heavy hex nuts Where: e = point to point m = thickness s = across flats d = Thread e - 11.05 mm (min) m - 4.7 mm (min) s - 10 mm (min) d - M6 Thread Pitch - 1.0 mm