Retaining Ring External 0.093 in Thk PK5 System of Measurement Inch Location Style External Thickness 0.093 in Fits Shaft Diameter 2 7/8 in For Bore Diameter Not Applicable Fits Groove Diameter 2.721 in Fits Groove Width 0.103 in Fits Groove Depth 0.077 in Free Inside Diameter 2.659 in Clearance Diameter 3.57 in Material Steel Finish Zinc Plated Material Grade/Class Ungraded Tensile Strength 150 000 psi Ring Type External Retaining Ring Clearance Diameter Type Expanded