BS EN ISO 7046-2-2011 H型或Z型十字槽埋头螺钉(普通头型).A级产品.性能等级为8.8的钢制螺钉,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. Steel screws of property class 8.8, stainless steel screws and non-ferrous metal screws