General Description This high-quality copper flat washer is designed for durability and corrosion resistance. With excellent electrical and thermal conductivity, it is ideal for a variety of applications. Its melting point reaches 1083°C, which gives it high heat resistance. Technical Specifications Type: Flat Washer Material: Copper Melting Point: 1083°C Quantity: 150pcs Box Size: 130 x 68 x 22mm Size Type: 15 (M5-M22) Sizes Included: M5*9*1, M6*10*1, M6*12*1, M8*12*1, M10*14*1, M10*16*1, M10x18x1, M12*16*1, M12*18*1.5, M14*18*1, M14*20*1.5, M16*22*1.5, M18*24*1.5, M20*26*1.5, M22*28*1.5 Compatibility and Accessories These washers are compatible with all types of engines, including those in cars, ships, generators, machinery, and factories. They are also used in a variety of applications such as: Oil pan plug Vehicle brake line Hydraulic accessories Preload indicator Vibration reduction Installation To install the washer, place it between the nut and the surface to be fastened. This