Back Home / Fasteners / Washers / FLAT WASHER SAE ZINC #6 FLAT WASHER SAE ZINC #6 SKU: SFW6 Categories: Fasteners, Washers Used to improve stress distribution, and to span large holes. SAE PATTERN. Made from low carbon steel, zinc plated. Outside Diameter: 3/8″ Inside Diameter: 5/32″ Case Quantity: 100 Log In For Pricing