BBI® Fender Flat Washer, series: 392, 1/4 in Inside dia, 1-1/4 in Outside dia, 0.05 in Thickness, 304 Stainless Steel, Material Grade: A2(18-8). BBI® 392060 Fender Flat Washer, 1/4 in ID x 1-1/4 in OD, 0.05 in Thick, 304 SS