Spiral Retaining Ring 0.015 in Thk PK10 System of Measurement Inch Location Style Internal Thickness 0.015 in Fits Shaft Diameter Not Applicable For Bore Diameter 1/4 in Fits Groove Diameter 0.268 in Fits Groove Width 0.02 in Fits Groove Depth 0.009 in Free Outside Diameter 0.27 in Material Stainless Steel Finish Plain Material Grade/Class 18-8 Tensile Strength 200 000 psi Ring Type Spiral Retaining Ring Material Quality Standards ANSI Manufacturer Location Made in USA