Split Lock Washer Finish Plain Material Stainless Steel For Screw Size 1 in Inside Diameter 1.003 in Outside Diameter 1.656 in Maximum Thickness 0.25 in Minimum Thickness 0.25 in Dimensional Standards ASME B18.21.1 Made in North America No Manufacturer Location Globally Sourced Material Grade/Class 316 Material Quality Standards SAE J405 316 (UNS S31600) Outside Diameter Tolerance Not Applicable Pack Size Small Pack REACH Compliant Yes Rockwell Hardness HRC35 RoHS Compliant Yes