Steel Fender Washer, Zinc Plated Fastener Finish, Fits Bolt Sizes 3/16 in/ CROSS-SECTIONAL SHAPE STYLE: 1 RECTANGULAR HOLE DIAMETER: 0.219 INCHES NOMINAL PERIPHERAL SHAPE STYLE: 1 ROUND CENTER HOLE SHAPE STYLE: 1 ROUND THICKNESS: 0.051 INCHES NOMINAL OVERALL DIAMETER: 1.000 INCHES NOMINAL PART NAME ASSIGNED BY CONTROLLING AGENCY: FENDER WASHER,ZINC,FITS 3/16 INCH SPECIAL FEATURES: MATERIAL:LOW CARBON STEEL MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL