Retaining Ring External 0.015 in Thk PK50 System of Measurement Not Applicable Location Style External Thickness 0.015 in Fits Shaft Diameter 9/64 in For Bore Diameter Not Applicable Fits Groove Diameter 0.397 in Fits Groove Width 0.029 in Fits Groove Depth Not Applicable Free Inside Diameter Not Applicable Free Outside Diameter 0.415 in Clearance Diameter 0.1406 in Material Steel Finish Plain Material Grade/Class Ungraded Tensile Strength Not Applicable Ring Type Retaining Ring