Bolt, Nut, Screw manufacturer / supplier in China, offering S/S Unf Nuts and Bolts Carbon Steel Stainless Steel M4 M5 M6 Captive Bolt 14mm Length, DIN 7964 M6 Black Carbon Steel Captive Screws Hexagon Socket Head Bolt, Factory Price Trox Round Head Self Tapping M5 Black Captive Bolt and so on.