The RAF 1057-SS stainless steel washer is a critical component for securing panel screw retainers in a variety of applications. Constructed from durable stainless steel, this washer provides reliable performance and corrosion resistance. Its 4-40 thread type, 0.171-inch outer diameter, and 0.010-inch length make it suitable for a wide range of fastening needs across industries like computers, telecommunications, medical, entertainment, and military/aerospace.