Retaining Ring External 0.05 in Thk PK25 System of Measurement Not Applicable Location Style External Thickness 0.05 in Fits Shaft Diameter 1 3/8 in For Bore Diameter Not Applicable Fits Groove Diameter 1.291 in Fits Groove Width 0.056 in Fits Groove Depth Not Applicable Free Inside Diameter Not Applicable Clearance Diameter 1.375 in Material Steel Finish Plain Material Grade/Class Ungraded Tensile Strength Not Applicable Ring Type Retaining Ring Shank Diameter Not Applicable