Flat Washer Flat Washer Type Standard Dimensional Standards DIN 9021 Material Stainless Steel Material Grade/Class 18-8 Finish Plain For Screw Size M30 Inside Diameter 33 mm Outside Diameter 92 mm Maximum Thickness 6 mm System of Measurement Metric Minimum Thickness 6 mm Maximum Temperature 302 Degrees F Minimum Temperature -58 Degrees F Pack Size Small Pack Package Quantity 5