Hex Head Wood Screw

Product： hexagon head wood screws Standard： DIN571 Specification ：ST2.2-ST6.3 Material ：Carbon steel4.8grade,8.8grade,10.9grade,12.9grade;   stainless steel202,304,316,316L;Brass Productive Process：wire rod→Anneal→Acid cleaing→Draw wire→molding and rolling thread→Heat treatment→Surface treat →Packing  Surface treat ：Plain,Black oxide,Blue white zinc,Yellow zinc,Hot dip  galvanized,Copper plating,Gold plating,Chromium Plating.  Quality： Control Raw material inspect→process monitoring→Product test→Packaging check Certification      ：   ISO9001:2008   CE cert    ROHs Packaging ：product bulk in plastic bag→Carton box→Wood pallet Application ：Wind tower,Nuclear power,Railway,Automotive industry,Construction,Electronic industry Delivery time     ：           3-30days Payment Terms ：T⁄T30%deposit,the balance70%when we finish all of the go…