Bolt, Screw, Flange Bolt manufacturer / supplier in China, offering Blue & White Zinc Hex Flange Bolt and Nut Gr 4.8 DIN6921 GB5789m5, Black Oxide DIN6921 GB5787 ASME B18.2.1.8 Hex Flange Bolt and Nut Gr 4.8 M6, Blue & White Zinc Hex Flange Bolt and Nut Gr 12.9 DIN6921 GB5789 ASME B18.2.1.8 M20 and so on.
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