Thread Size: M6 [White Zinc Butterfly Nut] Quality Material]-- Our butterfly wing nuts fasteners are made of high quality carbon steel with zinc surface-plating, It has characteristics such as high hardness, corrosion resistance, and oxidation resistance Designed with Carbon Steel with finest corrosion resistance and high temperature strength. Steel Nuts Butterfly Wing Nut M6 M8 M10 M12 M14 M16 M18 M20 M24 Wing Nuts Butterfly Nut 304 Stainless Steel Hand Tighten Nuts Claw Nut Fastener Hardware Wholesale Carbon Steel Zinc Plated Black Oxide Butterfly Wing Nut M6 Threaded Nuts Main Color: Silver Tone; Material: Carbon Steel This MroMax set gives you 30 pieces of M6 thread wing nuts made from carbon steel with a zinc plating that gives them that silver tone and some decent corrosion resistance Package Content: 30pcs x Butterfly Nut ;Product Name: Butterfly Nut Fixing component, industrial and construction fasteners.