Retaining Ring,External,0.042 In. Thk,PK50, System of Measurement Not Applicable, Location Style External, Thickness 0.042 in, Fits Shaft Diameter 11/16 in, For Bore Diameter Not Applicable, Fits Groove Diameter 0.646 in, Fits Groove Width 0.046 in, Fits Groove Depth Not Applicable, Free Inside Diameter Not Applicable, Free Outside Diameter 1.327 in, Clearance Diameter 0.6875 in, Material Steel, Finish Plain, Material Grade/Class Ungraded, Tensile Strength Not Applicable