Washers are essential components utilized in various mechanical and construction applications. They serve multiple purposes, including distributing the load of a threaded fastener, preventing leakage, and reducing friction between surfaces. Available in a variety of materials such as metal, rubber, and plastic, washers come in different shapes and sizes to accommodate specific requirements. Their design can significantly influence the performance and longevity of assemblies, making them a critical element in ensuring the reliability and efficiency of mechanical systems. Proper selection and installation of washers are vital to achieving optimal results in any project.