Retaining Ring External 0.042 in Thk PK50 System of Measurement Not Applicable Location Style External Thickness 0.042 in Fits Shaft Diameter 3/4 in For Bore Diameter Not Applicable Fits Groove Diameter 0.704 in Fits Groove Width 0.046 in Fits Groove Depth Not Applicable Free Inside Diameter Not Applicable Clearance Diameter 0.75 in Material Steel Finish Plain Material Grade/Class Ungraded Tensile Strength Not Applicable Ring Type Retaining Ring Shank Diameter Not Applicable