Spring washers are mechanical components designed to provide tension and absorb shock in various applications. They are typically made from metal and have a curved shape, allowing them to compress and expand under load. This feature helps maintain a tight connection between fasteners, such as screws and bolts, preventing loosening due to vibrations. These washers come in different types, including Belleville washers and wave washers, each serving specific purposes. They are commonly used in machinery, automotive, and construction industries to enhance the reliability and longevity of assembled parts. Proper selection and installation of spring washers can significantly improve performance.