ISO 4014 hexagon head screw, M12 x 45, Article number 40148120452. Property class / material: steel 8.8, surface finish hot-dip galvanised. 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.