Countersunk Washer, Material Grade/Class 6/6, Material Nylon, Finish Plain, For Screw Size #10, Maximum Inside Diameter 0.196 in, Outside Diameter 37/64 in, Countersink Angle 82 Degrees , Overall Height 0.152 in, System of Measurement Inch, Color Off-White, For Use With Flat and Oval Head Countersunk Screws, Maximum Temperature 185 Degrees F, Minimum Inside Diameter 0.197 in, Minimum Temperature -40 Degrees F, Pack Size Small Pack, Rockwell Hardness -, Thickness Tolerance +/-0.005 in