Lock Washer Lock Washer Type External Tooth Lock Finish Plain Material Phosphor Bronze For Screw Size #6 Inside Diameter 0.15 in Outside Diameter 0.32 in Maximum Thickness 0.022 in Color Bronze Dimensional Standards ASME B18.21.1 For Use With Small Screw Heads Material Grade/Class Not Graded Pack Size Small Pack Rockwell Hardness B90 System of Measurement Inch Thickness Tolerance 0.016 in to 0.022 in Package Quantity 100