M24 Self Colour Heavy Hexagon Nut - A194 Grade 4 Quenched & tempered medium carbon-molybdenum heavy hex nuts Where: e = point to point m = thickness s = across flats d = Thread e - 39.98 mm (min) m - 23.48 mm (min) s - 35.38 mm (min) d - M24 Thread Pitch -3.0 mm