GOST R ISO 7046-2-2013 带有H型或Z型十字槽的埋头平头螺钉(常见钉头型). 产品等级A. 第2部分. 性能级别为8.8的钢质螺钉, 不锈钢螺钉和有色金属螺钉
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