Midwest Fastener 5/16 in. USS Flat Washer

The Midwest Fastener 5/16 in. USS Flat Washer is designed to distribute the load of a threaded fastener across a broad surface area. Constructed from durable 18-8 stainless steel, this washer provides exceptional corrosion resistance and reliable strength for a wide variety of fastening applications. Ideal for outdoor, marine, and general construction projects, this flat washer helps prevent surface damage, reduces the risk of loosening under vibration, and ensures a secure, long-lasting assembly in challenging environments.