Hex Bolt, Hex Nut, Flange Nut manufacturer / supplier in China, offering DIN933 ASTM A325 Grade 8.8 Stainless Steel 304 Hex Bolt and Nut, DIN933 Stainless Steel Black Oxied ASTM F3125 Hex Bolt, China Fasteners Factory DIN933 DIN931 Galvanized HDG Hex Head Bolt and Nut and so on.