Bolt, Nut, Screw manufacturer / supplier in China, offering Manufacture Carbon Steel Q195 / Q235 Stainless Steel 304/ 316 Wing Nut Edged Wings, Q235 Steel Rivet Self Clinching Pem Round Nut Coupling Flush Locking Clinching Nut, China Fastener DIN ANSI Uns S32750 Uns S32304 Uns S31803 Unss32550 Duplex Stainless Steel Hex Vibration Bolt Ss410 and so on.