Fastener, Nuts, Wheel Hub Bolt manufacturer / supplier in China, offering Carbon Steel Class8 Black Oxide M30 DIN6330 High Strength Thick Hexagon Nut, Carbon Steel Class8 Black Oxide M36 DIN6330 High Strength Thick Hex Nut Deep Nuts Long Nuts, Zinc Plated DIN6330 Class8 M20hex Nut Thick Hex Nut Deep Nus Coupling Nut Long Nuts and so on.