Hex Bolt, Hex Nut, Flange Nut manufacturer / supplier in China, offering DIN 934 Carbon Steel Yellow Color Zinc Plated Hexagon Hex Nut, A2-70/A4-80 Ss 202 304 316 M3-M30 Hexagon Flange Bolt DIN 6921, A2 Stainless Steel Mushroom Round Head Carriage Bolt and Flange Nuts and so on.