Z0485 Fender Washer, Flat Washer Type Oversized, Dimensional Standards ASME B18.22.1, Material Steel, Material Grade/Class Grade 2, Finish Zinc Plated, For Screw Size 5/16 in, Inside Diameter 0.344 in, Outside Diameter 2 1/2 in, Maximum Thickness 0.08 in, System of Measurement Inch, Minimum Thickness 0.051 in, Color Silver, Inside Diameter Tolerance +/-0.010 in, Outside Diameter Tolerance +/-0.010 in, Pack Size Small Pack, Rockwell Hardness B55, Thickness Tolerance +0.005/-0.004 in, Package Quantity 5