Washers are small, flat discs typically made of metal or plastic, used in various mechanical applications. Their primary function is to distribute the load of a threaded fastener, such as a bolt or screw, preventing damage to the surface being fastened. Washers can also help to reduce friction and wear, and they come in different shapes and sizes, including flat, spring, and lock washers. In addition to their use in construction and machinery, washers are commonly found in household items like appliances and furniture. They play a crucial role in ensuring that components remain secure and function properly, contributing to the overall durability of products.