... Finish:zinc plated and so on NameSelf Tapping Screw MaterialLow carbon steel,Stainless SteelFinishwhite zinc plated, yellow zinc plated, ... term T/T, WU,MG Applications Stainless steel plate, metal plate, galvanized steel, engineering, installationmetal curtain wall of metal ... . carriages, containers, shipbuilding, refrigeration equipments Cross recessed ball head stainless steel tapping screw