Thick Fender Washer Flat Washer Type Oversized Material Steel Material Grade/Class Grade 2 Finish Zinc Plated For Screw Size 5/8 in Inside Diameter 0.688 in Outside Diameter 2 1/2 in Maximum Thickness 0.125 in System of Measurement Inch Minimum Thickness 0.125 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/-0.020 in Package Quantity 5