200PCS silver countersunk precision machined washers are sufficient to meet your daily use, replacement, and sharing needs; Our gaskets have standard holes to ensure even distribution of force, minimize sliding, and ensure ease of use. Made of 304 stainless steel, our gaskets are sturdy, wear-resistant, rust resistant, oxidation resistant, and corrosion-resistant, and can be used for a long time; Each washer has a smooth, burr free surface. The stainless steel countersunk washer has an inner diameter of 8 gauge and an outer diameter of 1/2 inch, and is used for a wide range of applications, distributing bolt, screw, and nut loads. It is very suitable for applications that require countersunking, such as DIY crafts, robots, airplanes, 3D printing equipment, communication equipment, petrochemical products, naval power facilities, and buildings, including automobiles, buildings, pipelines, electrical applications, and industrial environments; Countersunk washers are also very suitable for applications that require flat surfaces and can be used with various devices, including garden hoses, faucets, washing machines, showerheads, cylinders, pumps, and valves