screws 1.Material: carbon steel or alloy steel 2.size:6-14mm 3.to faster and joint stamping die components 4.hot price ... , high speed steel, carbon steel, alloy etc. Processing Standards DEM, HASCO, MISUMI, PUNCH, SANKYO, DAYTON Processed andTesting EquipmentsCenter-less grinder, surface grinder, internal grinder, cylindrical grinder ...