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 1/2 in, Inside Diameter 0.531 in, Outside Diameter 1 1/16 in, Maximum Thickness 0.095 in, System of Measurement Inch, Minimum Thickness 0.095 in, Color Yellow, Inside Diameter Tolerance 0.526-0.546, Made in North America No, Manufacturer Location Globally Sourced, Material Quality Standards ASTM A-325, Maximum Temperature 350 Degrees C