Retaining Ring External 0.035 in Thk PK50 System of Measurement Not Applicable Location Style External Thickness 0.035 in Fits Shaft Diameter 3/8 in For Bore Diameter Not Applicable Fits Groove Diameter 1.33 in Fits Groove Width 0.056 in Fits Groove Depth Not Applicable Free Inside Diameter Not Applicable Free Outside Diameter 1.388 in Clearance Diameter 0.375 in Material Steel Finish Plain Material Grade/Class Ungraded Tensile Strength Not Applicable Ring Type Retaining Ring