USS Washer Flat Washer Type USS Dimensional Standards ASME B18.22.1 Material Steel Material Grade/Class Class 10.9 Finish Zinc Yellow For Screw Size 9/16 in Inside Diameter 0.625 in Outside Diameter 1 15/32 in Maximum Thickness 0.109 in System of Measurement Inch Minimum Thickness 0.109 in Color Yellow Inside Diameter Tolerance 0.62-0.64 Made in North America No Manufacturer Location Globally Sourced Material Quality Standards ASTM A-325 Maximum Temperature 350 Degrees C