SAE Washer Flat Washer Type SAE Dimensional Standards ASME B18.22.1 SAE Material Steel Material Grade/Class Class 10.9 Finish Zinc Yellow For Screw Size 1 1/4 in Inside Diameter 1.375 in Outside Diameter 2 1/2 in Maximum Thickness 0.165 in System of Measurement Inch Minimum Thickness 0.165 in Color Yellow Inside Diameter Tolerance 1.368-1.405 Made in North America No Manufacturer Location Globally Sourced Material Quality Standards ASTM A-325 Maximum Temperature 350 Degrees C