Hex Bolt, Hex Nut, Flange Nut manufacturer / supplier in China, offering M6-M20 Full Thread High Tensile Galvanised Zinc Plated Hexagon Bolt DIN 933, Carbon Steel and Stainless Steel Allen Key Tension Control Hex Hexagon Head Threaded Bolt, Hardware Fasteners High Quality M3-M30 Stainless Steel 304/316 Hexagon Flange Bolt and so on.