Retaining Ring External 0.01 in Thk PK50 System of Measurement Not Applicable Location Style External Thickness 0.01 in Fits Shaft Diameter 3/16 in For Bore Diameter Not Applicable Fits Groove Diameter 3.446 in Fits Groove Width 0.12 in Fits Groove Depth Not Applicable Free Inside Diameter Not Applicable Free Outside Diameter 0.444 in Clearance Diameter 0.1875 in Material Steel Finish Plain Material Grade/Class Ungraded Tensile Strength Not Applicable Ring Type Retaining Ring