Split Lock Washer Lock Washer Type Split Lock Finish Plain Material Silicon Bronze For Screw Size #8 Inside Diameter 0.167 in Outside Diameter 0.293 in Maximum Thickness 0.04 in Minimum Thickness 0.04 in Dimensional Standards ASME B18.21.1 Material Grade/Class Not Graded Pack Size Small Pack Rockwell Hardness B90 Package Quantity 100