Offer all kinds of Self Drilling Screw ,Din ,Ansi,Jis ,Galvanized zinc ,black ,grey ,yellow and so on ,welcome to contact We supply all kinds of self drilling screw , Standard : Din , Ansi, Jis ..... Surface treatment: Zinc plated Yellow Black Gray ... Packing: carton ,color boxes ,bag ... QTY: 700 tons per month Self Drilling screw