Spiral Retaining Ring 0.025 in Thk PK25 System of Measurement Inch Location Style External Thickness 0.025 in Fits Shaft Diameter 1/4 in For Bore Diameter Not Applicable Fits Groove Diameter 0.23 in Fits Groove Width 0.029 in Fits Groove Depth 0.01 in Free Inside Diameter 0.228 in Material Steel Finish Plain Material Grade/Class Ungraded Tensile Strength 221 000 psi Ring Type Spiral Retaining Ring Material Quality Standards ANSI Manufacturer Location Made in USA