Flat Washer, Flat Washer Type Oversized, Dimensional Standards ASME B18.21.1, Material Steel, Finish Black Oxide, For Screw Size 1 1/2 in, Inside Diameter 1.625 in, Outside Diameter 3 1/2 in, Maximum Thickness 3/16 in, System of Measurement Inch, Minimum Thickness 3/16 in, Color Clear, Inside Diameter Tolerance 1.615-1.67, Made in North America Not Made in North America, Manufacturer Location Globally Sourced, Material Quality Standards Not Rated, Maximum Temperature 350 Degrees C