Back Home / Fasteners / Washers / FLAT WASHER METRIC ZINC M20 CL10 FLAT WASHER METRIC ZINC M20 CL10 SKU: XFW20M10 Categories: Fasteners, Washers Used to improve stress distribution, and to span large holes. Din 125A Made from low carbon steel, zinc plated. Inside Diameter: M21 Outside Diameter: M37 Used to improve stress distribution, and to span large holes. Din 125A Made from low carbon steel, zinc plated. Inside Diameter: M21 Outside Diameter: Case Quantity: 25 Log In For Pricing