Back Home / Fasteners / Washers / FLAT WASHER SAE ZINC 1″ FLAT WASHER SAE ZINC 1″ SKU: SFW1 Categories: Fasteners, Washers Used to improve stress distribution, and to span large holes. SAE PATTERN. Made from low carbon steel, zinc plated. Outside Diameter: 2″ Inside Diameter: 1-1/16″ Case Quantity: 25 Log In For Pricing