Roofing Screw, Drywall Screw, Blind Rivet manufacturer / supplier in China, offering M5 M6 M8 M10 DIN6921 SS304 316 Stainless Steel Hex Flange Bolt with Serrations, Customized ISO GOST Automotive Industry Finish Plain Thread Type Coarse Fine Size M3-M16 DIN6926 Nylon Locking Hex Flange Nut, Cadmium Plated Zinc-Aluminum Coated DIN985 Brass Stainless Steel Aluminium M5-M24 Hex Hread Nylon Nut Locking Nylon Insert Nuts and so on.