Flat Washer Flat Washer Type Standard Dimensional Standards DIN 125-1A Material Steel Material Grade/Class Grade 2 Finish Plain For Screw Size M24 Inside Diameter 25 mm Outside Diameter 44 mm Maximum Thickness 4 mm System of Measurement Metric Minimum Thickness 4 mm Color Black Pack Size Small Pack Thickness Tolerance +/-0.30mm Package Quantity 25