Flat Washer, Dimensional Standards AMPG 2001 FL.01, Material Fiberglass, For Screw Size 5/8 in, Inside Diameter 0.64 in, Outside Diameter 1 3/16 in, Maximum Thickness 3/32 in, System of Measurement Inch, Minimum Thickness 3/32 in, Inside Diameter Tolerance +/-0.010 in, Made in North America Made in North America, Material Quality Standards Not Applicable, Outside Diameter Tolerance +/-0.010 in, Resistance Properties Chemical-Resistant, Nonconductive, Thickness Tolerance +0.005/-0.014 in