Flat Washers, Flat Washer Type Standard, Dimensional Standards DIN 125-1A, Material Steel, Material Grade/Class Grade 2, Finish Zinc Plated, For Screw Size M16, Inside Diameter 17 mm, Outside Diameter 30 mm, Maximum Thickness 3 mm, System of Measurement Metric, Minimum Thickness 3 mm, Color Silver, Inside Diameter Tolerance 0.669-0.68, Made in North America No, Manufacturer Location Globally Sourced, Material Quality Standards Not Rated, Maximum Temperature 350 Degrees C