Hex Lag Screw, Machine Screw, Hex Socket Cap Screw manufacturer / supplier in China, offering DIN933/ISO4017 Hex Bolts Grade 12.9 HDG Black/Yellow/White Zinc Plated M8*8-110mm, DIN933/ISO4017 Hex Bolts Grade 4.8 HDG Black/Yellow/White Zinc Plated M14*10-150mm, DIN933/ISO4017 Hex Bolts Grade 12.9 HDG Black/Yellow/White Zinc Plated M27*22-200mm and so on.