Non-Standard Metal Parts manufacturer / supplier in China, offering Metric M3-M36 DIN934 GB6170 Carbon Steel Yellow Zinc Plated Hex Nut Hexagon Nuts, DIN934 Carbon Steel Hexagonal Nuts Fasteners M2-M72 Black Hex Nut Customized, DIN934 Hex Nut Stainless Steel 304/316 Zinc Plated Grade A2-70 for Industrial and so on.