Retaining Ring External 0.035 in Thk PK100 System of Measurement Inch Location Style External Thickness 0.035 in Fits Shaft Diameter 5/8 in For Bore Diameter Not Applicable Fits Groove Diameter 0.588 in Fits Groove Width 0.039 in Fits Groove Depth 0.018 in Free Inside Diameter 0.579 in Clearance Diameter 0.9 in Material Steel Finish Zinc Plated Material Grade/Class Ungraded Tensile Strength 120 000 psi Ring Type External Retaining Ring Clearance Diameter Type Expanded