Brighton Best's 5/16 in. USS Zinc-Plated Flat Washer is designed to help reduce pull-through, prevent embedment in softer materials, and maintain proper clamping force under load. The wide bearing surface makes it especially useful in wood-to-metal and metal-to-metal connections where added stability is required. Ideal for contractors, OEM applications, and MRO inventory, this washer delivers dependable performance, dimensional accuracy, and corrosion resistance for interior and light exterior projects requiring compliant USS flat washers.