Countersunk flat head screws (common head style) with type H or type Z cross recess -- Product grade A -- Part 1: Steel screws of property class 4.8— 10 стр.
Countersunk flat head screws (common head style) with type H or type Z cross recess -- Product grade A -- Part 2: Steel screws of property class 8.8, stainless steel screws and non-ferrous metal screws— 12 стр.