Retaining Ring External 0.042 in Thk PK50 System of Measurement Not Applicable Location Style External Thickness 0.042 in Fits Shaft Diameter 5/8 in For Bore Diameter Not Applicable Fits Groove Diameter 1.658 in Fits Groove Width 0.068 in Fits Groove Depth Not Applicable Free Inside Diameter Not Applicable Free Outside Diameter 1.743 in Clearance Diameter 0.625 in Material Steel Finish Plain Material Grade/Class Ungraded Tensile Strength Not Applicable Ring Type Retaining Ring