Duty Retaining Ring 0.093 in Thk PK10 System of Measurement Inch Location Style External Thickness 0.093 in Fits Shaft Diameter 1 3/8 in For Bore Diameter Not Applicable Fits Groove Diameter 1.291 in Fits Groove Width 0.103 in Fits Groove Depth 0.042 in Free Inside Diameter 1.268 in Clearance Diameter 1.83 in Material Steel Finish Black Phosphate Material Grade/Class Ungraded Tensile Strength 150 000 psi Ring Type External Retaining Ring Clearance Diameter Type Expanded