Flat Washer Flat Washer Type Oversized Material Steel Material Grade/Class Grade 2 Finish Zinc Plated For Screw Size M10 Inside Diameter 10.5 mm Outside Diameter 38 mm Maximum Thickness 1.5 mm System of Measurement Metric Minimum Thickness 1.5 mm Color Silver Maximum Temperature 302 Degrees F Minimum Temperature -58 Degrees F Pack Size Small Pack Package Quantity 100