This Burnham Commercial flat washer is a standard component in many industrial applications. It is designed to distribute the load of a threaded fastener, such as a screw or nut, and prevent damage to the surface being fixed. The washer has a United States Standard (USS) size of 3/8 inch, making it compatible with numerous hardware configurations. It is made from plain steel (STL), ensuring durability and resistance to wear over time. The plain finish of the washer provides a raw metal look that can be painted or coated for additional protection against corrosion.