Bolt, Nut, Customized Fastener manufacturer / supplier in China, offering Black Oxide Coated Unc/Unf Threads SAE J429 Grade 5 & 8 Threaded Rod, M10-M56 Class 4.8/8.8/10.9 Structural Fastening Metric Threaded Rod, Corrosion Resistance Marine Aquatic Environments A4-80 Stainless Steel 316 Stud Bolt and so on.