Brass washers are small flat discs made from brass, a type of alloy composed primarily of copper and zinc. They are commonly used in mechanical applications to distribute the load of a threaded fastener such as a bolt or screw, helping to prevent damage to the surface of the material being fastened and to ensure a secure, tight fit. Brass washers can come in a variety of sizes and thicknesses to suit different applications. They may be plain or have a raised edge or lip around the circumference to help keep them in place. Some may also have additional features such as teeth or serrations on one or both sides to provide extra grip. Due to their corrosion-resistant properties, brass washers are often used in applications where they may be exposed to moisture or other harsh conditions. They are also valued for their aesthetic qualities, as brass has a warm, golden color that can add a decorative touch to a finished product.