Bolt, Nut, Screw manufacturer / supplier in China, offering Hardware All Kinds Nut Stainless Steel Hex Nuts Flange Nut, Cap Nut, Round Nut, Slotted Nut, Welding Nuts, China Fasteners Hardware Grade 8.8 Stainless Steel Carbon Steel DIN931 DIN933 M6 Hex Head Bolt Bouten Tuerca Perno, ASTM A325/A325m A490/A490m Grade 8.8 10.9 12.9 Heavy Hex Bolts for Steel Structure Buildings Bridges Towers and so on.