Flat Washer, Flat Washer Type Standard, Dimensional Standards ASME B18.22.1, Material Steel, Finish Black Oxide, For Screw Size 3 in, Inside Diameter 3 in, Outside Diameter 5 1/2 in, Maximum Thickness 9/32 in, System of Measurement Inch, Minimum Thickness 9/32 in, Color Clear, Inside Diameter Tolerance 3.115 to 3.19, Made in North America Not Made in North America, Manufacturer Location Globally Sourced, Material Quality Standards Not Rated, Maximum Temperature 350 Degrees C