1. Material: Brass. M4 pitch (P) 0.7 hexagonal opposite side (s) 7.0 M5 pitch (P) 0.8 hexagonal opposite side (s) 8.0. M6 pitch (P) 1.0 hexagonal opposite side (s) 10.0 M8 pitch (P) 1.25 hexagonal across flats (s) 13.0. M10 pitch (P) 1.5 hexagonal across flats (s) 17.0 M12 pitch (P) 1.75 hexagonal opposite side (s) 19.0.
