Split Lock Washer Lock Washer Type Split Lock Finish Plain Material Silicon Bronze For Screw Size #6 Inside Diameter 0.148 in Outside Diameter 0.25 in Maximum Thickness 0.031 in Minimum Thickness 0.031 in Color Bronze Dimensional Standards ANSI B18.22.1 Material Grade/Class Not Graded Pack Size Small Pack Rockwell Hardness B90 Thickness Tolerance 0.031 in Package Quantity 100