Hex Lag Screw, Machine Screw, Hex Socket Cap Screw manufacturer / supplier in China, offering DIN934 Hex Nut with HDG Black/Yellow/White Zinc Plated M4 Grade4.8/8.8/10.9/12.9, DIN934 Hex Nut with HDG Black/Yellow/White Zinc Plated M3.5 Grade4.8/8.8/10.9/12.9, DIN934 Hex Nut with HDG Black/Yellow/White Zinc Plated M2.6 Grade4.8/8.8/10.9/12.9 and so on.