Split Lock Washer Lock Washer Type Split Lock Finish Plain Material Silicon Bronze For Screw Size #4 Inside Diameter 0.12 in Outside Diameter 0.209 in Maximum Thickness 0.025 in Minimum Thickness 0.025 in Color Bronze Dimensional Standards ANSI B18.22.1 Material Grade/Class Not Graded Pack Size Small Pack Rockwell Hardness B90 Thickness Tolerance 0.025 in Package Quantity 100