Steel Flat Washer, Hot-Dipped Galvanized Finish, ASME B18.22.1, 3/4" Screw Size, 13/16" ID, 2" OD, 0.148" Thick (Pack of 25) Flat washer provides a bearing surface for fastener load distribution or acts as a spacer Steel is often used in applications where strength is the primary consideration Hot-dipped galvanized finish offers excellent corrosion resistance Meets ASME B18.22.1 specifications