Split Lock Washer Lock Washer Type Split Lock Finish Plain Material Silicon Bronze For Screw Size #6 Inside Diameter 0.141 in Outside Diameter 0.25 in Maximum Thickness 0.031 in Minimum Thickness 0.031 in Color Bronze Dimensional Standards ASME B18.21.1 Inside Diameter Tolerance +/-0.0035 Made in North America No Manufacturer Location Globally Sourced Material Grade/Class Not Graded Material Quality Standards SAE J461 Maximum Temperature 900 Degrees F