Fasteners, CNC Parts, Hex Bolts manufacturer / supplier in China, offering GB6184 Black Electrophoresis Stainless Steel Hex Nut with Locking Ring DIN980 Carbon Steel Zinc Plated Hex Self-Locking Nut, ISO 7719 M5-M36 Hexagonal Stainless Steel Carbon Steel Black Prevailing Torque Type All-Metal Hexagon Nuts, Factory Direct Supply Galvanized Carbon Steel Metal Locking Nuts DIN 980 Anti Loosening Self-Locking Nuts and so on.