ITEM NAME:150Pcs Stainless Steel Serrated Hex Flange Nuts Flange Metric Hex Lock Nuts R7L9 150Pcs Stainless Steel Serrated Hex Flange Nuts Flange Metric Hex Lock Nuts R7L9 1.Stainless Steel, corrosion resistant galvanized finish 2.The combination of chromium and nickel produces an antioxidant layer on the surface of the material, which is wear-resistant, rust-resistant and corrosion-resistant. 3.Different types of Flange Nuts, Designed to stand off the material to allow easy weld penetration,widely used to industrial machine. 4.Great replacement for industrial and construction fasteners,also can be a important accessories in your daily life. Selection models: M3, M4, M5, M6, M8, M10, M12(optional) Warning: the product are small parts, keep away from children and kids. Size:17.5*10*2.2cm Material:stainless steel Colour:Silver Package Contents: 40 * M3 stainless steel flange nut 35 * M4 stainless steel flange nut 25 * M5 stainless steel flange nut 20 * M6 stainless steel flange nut 15 * M8 stainless steel flange nut 10 * M10 stainless steel flange nut 5 * M12 stainless steel flange nut.Different types of Flange Nuts, Designed to stand off the material to allow easy weld penetration,widely used to industrial machine. 40 M3 stainless steel flange nut. 35 M4 stainless steel flange nut.