Fastener, Nuts, Wheel Hub Bolt manufacturer / supplier in China, offering Black M64 Heavy Nuts High Strength GB6170 DIN934 ISO4032 Hex Nuts, Black Class8 M22 M24 M27 M30 M36 M39 M42 M45 M56 M60 M72 Hex Nuts Heavy Nut ISO4032 DIN934 DIN439 ASME B 18.2.2 A194 A563, Durable Performance Lock Nut with Reliable Dacromet Coating for Secure Anchoring and so on.