Back Home / Fasteners / Washers / FLAT WASHER SAE ZINC #10 FLAT WASHER SAE ZINC #10 SKU: SFW10 Categories: Fasteners, Washers Used to improve stress distribution, and to span large holes. SAE PATTERN. Made from low carbon steel, zinc plated. Outside Diameter: 1/2″ Inside Diameter: 7/32″ Case Quantity: 100 Log In For Pricing