Retaining Ring Internal 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 0.28 in Clearance Diameter 0.133 in Material Stainless Steel Finish Plain Material Grade/Class 18-8 Tensile Strength 120 000 psi Ring Type Housing Ring Clearance Diameter Type Expanded