Drywall Screw 1)Finishing:Phosphating,ZincPlated 2)D:2.9-6.3mm,L:10-120mm 3)Certificate:ISO9001:2008 Specification:DIN,JIS,ASME and according to customers' requirements.Surface treatment: Phosphating(Black and Gray),Zinc coat(CR3),Zinc coat(CR6),Yellow zinc coat(CR6)Thread:UNC,UNF,A,AB,B and as clients' demandPrice: Competitive priceMaterial: Carbon steelPackage: Boxes-->cartons-->pallets;Cartons ...