Flat Washer Flat Washer Type Standard Material Nylon Material Grade/Class Grade 2 Finish Plain For Screw Size #8 Inside Diameter 0.188 in Outside Diameter 1/2 in Maximum Thickness 0.032 in System of Measurement Inch Minimum Thickness 0.032 in Color Off-White Pack Size Small Pack Resistance Properties Abrasion Resistant Thickness Tolerance +/-0.005 in Package Quantity 40