Retaining Ring External 0.05 in Thk PK25 System of Measurement Inch Location Style External Thickness 0.05 in Fits Shaft Diameter 1 1/8 in For Bore Diameter Not Applicable Fits Groove Diameter 1.059 in Fits Groove Width 0.056 in Fits Groove Depth 0.033 in Free Inside Diameter 1.041 in Clearance Diameter 1.55 in Material Steel Finish Zinc Plated Material Grade/Class Ungraded Tensile Strength 150 000 psi Ring Type External Retaining Ring Clearance Diameter Type Expanded