Aluminum alloy washers are commonly used in the automotive and manufacturing industries due to their lightweight and high strength-to-weight ratio. They are used to distribute the load of a threaded fastener and prevent damage to the object being fastened. They are also used to provide a smooth surface for the fastener and to reduce vibration. It's important to choose the appropriate grade of aluminum alloy for the intended use, as different grades have varying levels of strength, corrosion resistance, and heat resistance.
