Flat Washer Flat Washer Type Standard Material Nylon Material Grade/Class Grade 2 Finish Plain For Screw Size #6 Inside Diameter 0.14 in Outside Diameter 5/16 in Maximum Thickness 0.032 in System of Measurement Inch Minimum Thickness 0.032 in Color Off-White Pack Size Small Pack Thickness Tolerance +/-0.005 in Package Quantity 40