... 3/8-5" Material: 1022 Surface: z/p, black Black Phosphate Drywall ScrewMaterial:carbon steel, alloy steel, stainless steel, copper;Main Feature:with ... .5x25mm,3.5x30mm,3.5x32mm,3.5x38...Finished:black phosphated,grey phosphated,black,white zinc coated,color zinc coated,blue zinc ... More and more widely used in wood,instead of wood screw,metal,all kinds of board...Package:1000pcs/box,16-20boxes/carton as ...