Steel Wire Rope Clamp, Nut and Bolt, Thread Rod manufacturer / supplier in China, offering Robust Black Flange Nuts in Bulk for Precision, High Quality Variety Size 4.8.8.8 10.9 12.9 Zinc Plat M6~M56 DIN6921 Flange Bolt, Factory High Quality DIN6923 Carbon Steel 4.8/8.8 Grade Hexagon Flange Nut and so on.