Countersunk flat head screws (common head style) with type H or type Z cross recess. Product grade A. Steel screws of property class 8.8, stainless steel screws and non-ferrous metal screws|External-thread fasteners, Countersunk fasteners, Recessed-head fasteners, Cruciform-head fasteners, Designations, Stainless steels, Fasteners, Non-ferrous metals, Preferred sizes, Corrosion-resistant steels, Dimensional tolerances, Threaded fasteners, Grades (quality), Screws (bolts), Threads, Heads (fasteners), Dimensions