Fender Washers are flat washers with a greater surface area than a washer for USS or SAE. They are also produced from a thinner metal gauge than most flat washers. Fender washers are used where an additional large surface of the bearing is needed. They were originally intended for auto body repair work and are also used in sheet metal, plumbing, and electrical work. Designed also for the installation of drywall, wood paneling and used to add signs to posts.