Tapping screw Material:sus Certificate: ISO9001,ISO14001 Support:Senior workers Qualitycontrol: 100% inspection Features: Carbon Steel Round Head Philips Drive Tapping Screws 1.Material:C1008-C1010 carbon steel, 18-8 stainless steel, Aluminum 5056, Brass and etc as per your need.2.Surface Finish:black oxide, black zinc, colour zinc, passivated, phosphated, golden plating, nickel plated, chromnium ...