Check the listing for details. M12x1mm Serrated Flange Hex Lock Nuts, 15Pcs Nut Fasteners, Silver. Condition: New. Listed at 17.79 USD. These metric fine-threaded Flange hexagonal nuts are common fastening components with wide applications. They are usually used together with machine screws, power tools, bolts, screws, and other components with external threads. It is applicable to chandeliers, lamps, switches, electrical equipment, mechanical maintenance or repair, DIY projects, etc.Specification:Color: SilverMaterial: Zinc Plated Carbon SteelThread Size: M12x1Flange Outer Diameter: 21.9mm / 0.86 inchHex Width: 17.9mm / 0.7 inchHeight: 9.6mm / 0.38 inchPacking List: 15Pcs x Serrated Flange Hex Lock NutsAdvantage:Adopting fine processing techniques, the threads are deep and clear. During use, the force is evenly distributed, and the connection is more secure.