Hex Lag Screw, Machine Screw, Hex Socket Cap Screw manufacturer / supplier in China, offering DIN933 Hex Bolt Grade10.9 HDG Black/Yellow/White Zinc Plated M27*22-200mm, ASME B 18.2.1 Heavy Hex Bolt Screw 1-1/4" ASTM A325 Hex Bolt Gr. 2, DIN934 Hex Nut with Black/Yellow/White Zinc Plated M60 Grade4.8/8.8/10.9/12.9 and so on.