Retaining Ring,Internal,0.025 In. Thk,PK50, System of Measurement Inch, Location Style Internal, Thickness 0.025 in, Fits Shaft Diameter Not Applicable, For Bore Diameter 7/16 in, Fits Groove Diameter 0.461 in, Fits Groove Width 0.029 in, Fits Groove Depth 0.012 in, Free Outside Diameter 0.482 in, Material Steel, Finish Zinc Plated, Material Grade/Class Ungraded, Tensile Strength 120,000 psi, Ring Type Housing Ring, Clearance Diameter Type Expanded, Material Quality Standards ASME