Plain Washer
Plain washers are simple, flat rings made of various materials, such as metal, plastic, rubber, or fiber. They are used to distribute the load of a threaded fastener, such as a bolt or a screw, over a larger surface area to prevent damage to the material being fastened.
Plain washers are available in a wide range of sizes, shapes, and materials to fit various applications. Metal washers, such as stainless steel, brass, or copper, are often used in heavy-duty applications, while plastic or rubber washers are commonly used in electrical or plumbing applications where insulation or sealing is required.