Split Lock Washer, Lock Washer Type Split Lock, Finish Chrome Plated, Material Steel, For Screw Size 1/4 in, Inside Diameter 0.26 in, Outside Diameter 0.487 in, Maximum Thickness 0.062 in, Minimum Thickness 0.062 in, Color Chrome, Dimensional Standards ASME B18.21.1, Material Grade/Class Not Graded, Pack Size Small Pack, Rockwell Hardness C38, System of Measurement Inch, Thickness Tolerance +/-0.010 in, Package Quantity 50