Back Home / Fasteners / Washers / FLAT WASHER USS 5/8″ STAINLESS FLAT WASHER USS 5/8″ STAINLESS SKU: XFW58SS Categories: Fasteners, Washers Used to improve stress distribution, and to span large holes. USS PATTERN. Used where parts are subject to corrosion. Made from 18-8 stainless steel. Outside Diameter: 1-1/2″ Case Quantity: 50 Log In For Pricing