ISO 4014 hexagon head screw, M20 x 120, Article number 401410201202. Property class / material: steel 10.9, surface finish hot-dip galvanised (iso fit). Hexagon Head Screw manufactured to ISO 4014 with ISO metric (M) thread, coarse pitch, partially threaded. Standard parts to the same standard, property class, dimensions and surface finish are interchangeable between manufacturers; confirm the controlling standard revision, any class-society or application approval, and the mating thread before substitution.