20pcs Countersunk Finish Cup Washers(M4), Pure Copper Countersunk Screw Washer, CNC Flat Head Gasket, Screw Washer

General descriptionThe 20pcs Countersunk Finish Cup Washers are made from pure copper, designed for a secure and firm fit. These washers feature standard concentricity and smooth external concentricity, ensuring precise alignment and stability when used with countersunk head screws. They are lightweight and easy to install, making them suitable for various applications.Technical specificationsItem Type: Countersunk Screw WasherMaterial: Pure CopperSize: M4Outer Diameter: 10 mmHeight: 2.5 mmPackage list: 20 washersUsageCan be installed on many different types of materials.Ideal for applications requiring a secure and firm fit.