Hex Lag Screw, Machine Screw, Hex Socket Cap Screw manufacturer / supplier in China, offering DIN912 Grade 8.8 with White Zinc Plated Cr3+, DIN912 Grade 8.8 Hex Socket Head Cap Screw with Zinc Plated Cr3+, Hexagon Socket Head Cap Screw Bolt DIN912 Grade4.8/8.810.9/12.9 and so on.
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