philip head machining screw 1/ micro machining 2/ high quality steel alloy 3/ black finish 4/ ISO9001 manufacturer Product TypePhilip head machining screwsMaterialStainless steel, Carbon Steel, copper, ironMachining method Screw machiningSurface finishChrome plating, zinc plating, blackening, Nickel plating, Electrophoresis, AnodizationColorMetal colors availableOEM & ODMAvailableRohs ...