Back Home / Fasteners / Washers / LOCK WASHER EXTERNAL ZINC #8 EXTERNAL TOOTHED LOCK WASHER EXTERNAL ZINC #8 EXTERNAL TOOTHED SKU: ELW8 Categories: Fasteners, Washers A hardened circular washer with twisted prongs or teeth which extend out from the outer edge of the washer. Most common of all tooth-lock washers. Offers the greatest locking efficiency since the teeth are on the largest radius. Made from spring steel, zinc plated. Rockwell Hardness: C40-50 Inside Diameter: Min.168 Max .176 Outside Diameter: Min .365 Max .381 Thickness: Min .018 Max .023 Case Quantity: 100 Log In For Pricing