... :nickel plated,zinc plated with or without hardend self tapping screw with all kinds of head and sizesfasterner,screws,1.finish ... into color box,then to ourter carton5.Standard:GB,DIN,JIS,ANSI,BA6.material:carbon steel,stainless steel,brass7.size:M3 ... ,M14,M16,M18,M20,M22,M24,M27,M30 self tapping screw with all kinds of head and sizes