Retaining Ring,External,0.025 In. Thk,PK10, System of Measurement Inch, Location Style External, Thickness 0.025 in, Fits Shaft Diameter 9/32 in, For Bore Diameter 1/4 in, Fits Groove Diameter 0.261 in, Fits Groove Width 0.029 in, Fits Groove Depth 0.01 in, Free Inside Diameter 0.256 in, Clearance Diameter 0.49 in, Material Stainless Steel, Finish Plain, Material Grade/Class 18-8, Tensile Strength 120,000 psi, Ring Type External Retaining Ring, Clearance Diameter Type Expanded