... character type, One Way etc.MaterialCarbon steel, stainless steel, SS-304, SS-302, Aluminum, Brass, Bronze, medium carbon alloy steel etc.Surface TreatmentZn-plating, Ni- ... machine DA SHUANG YANG & M230-2, Lathe machine C6233,Wire cutting machine Deren & DK7740 etc.Testing EquipmentProjecting apparatus, Salt ... en.alibaba.com all kinds of screw ,machine screw ,stainless steel screw and fasteners