Flat Washer Flat Washer Type Standard Dimensional Standards DIN 9021 Material Stainless Steel Material Grade/Class 316 Finish Plain For Screw Size M5 Inside Diameter 5.3 mm Outside Diameter 15 mm Maximum Thickness 1.2 mm System of Measurement Metric Minimum Thickness 1.2 mm Maximum Temperature 302 Degrees F Minimum Temperature -58 Degrees F Pack Size Small Pack Package Quantity 50