GOST R ISO 7046-1-2013 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
2013GOST R ISO 7046-1-2013 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