Flat Washer Flat Washer Type Standard Material Nylon Material Grade/Class Grade 2 Finish Plain For Screw Size #8 Inside Diameter 0.171 in Outside Diameter 3/8 in Maximum Thickness 0.062 in System of Measurement Inch Minimum Thickness 0.062 in Color Off-White Pack Size Small Pack Thickness Tolerance +/-0.005 in Package Quantity 40