Flat Washer, Flat Washer Type Oversized, Dimensional Standards ASME B18.21.1, Material Steel, Material Grade/Class Grade 2, Finish Zinc Plated, For Screw Size 1 in, Inside Diameter 1.063 in, Outside Diameter 2 1/2 in, Maximum Thickness 0.165 in, System of Measurement Inch, Minimum Thickness 0.165 in, Color Silver, Inside Diameter Tolerance 1.055-1.092, Made in North America No, Manufacturer Location Globally Sourced, Material Quality Standards Not Rated, Maximum Temperature 350 Degrees C