Check the listing for details. M3x5x0.8mm Split Lock Washer, 20 PCS Copper Metric Spring Lock Gaskets. Condition: New. Listed at 14.75 USD. Spring washers are suitable for use with screws, nuts, and bolts of the same size, providing secure connections for moving parts and preventing loosening. Widely used in furniture repair, outdoor construction, and electrical maintenance.SpecificationsColor: Copper ToneMaterial: CopperInner diameter: 3.3mm / 0.13 inchOuter diameter: 5mm / 0.2 inchThickness: 0.8mm / 0.03 inchPackage Includes: 20 x Split Lock WasherAdvantageThe spring locking washer is made of copper, which is corrosion-resistant and resistant to high and low temperatures. It is robust, durable, oxidation-resistant, and rust-proof, and does not easily wear down with long-term use. Its smooth, wear-resistant surface provides excellent sealing performance and a larger bearing surface, thereby reducing pressure and friction and effectively preventing leakage and loosening.