Flat Washer Flat Washer Type Standard Dimensional Standards DIN 9021 Material Stainless Steel Material Grade/Class 316 Finish Plain For Screw Size M16 Inside Diameter 17 mm Outside Diameter 50 mm Maximum Thickness 3 mm System of Measurement Metric Minimum Thickness 3 mm Maximum Temperature 302 Degrees F Minimum Temperature -58 Degrees F Pack Size Small Pack Package Quantity 10