Flat Washer Flat Washer Type Standard Dimensional Standards DIN 125-1A Material Stainless Steel Material Grade/Class 18-8 Finish Plain For Screw Size M1.6 Inside Diameter 1.7 mm Outside Diameter 4 mm Maximum Thickness 0.35 mm System of Measurement Metric Minimum Thickness 0.25 mm Color Silver Inside Diameter Tolerance +0.14 mm Made in North America No Manufacturer Location Globally Sourced Maximum Temperature 302 Degrees F Minimum Temperature -58 Degrees F