Retaining Ring Internal 0.035 in Thk PK50 System of Measurement Inch Location Style Internal Thickness 0.035 in Fits Shaft Diameter Not Applicable For Bore Diameter 5/8 in Fits Groove Diameter 0.665 in Fits Groove Width 0.039 in Fits Groove Depth 0.02 in Free Outside Diameter 0.694 in Clearance Diameter 0.38 in Material Steel Finish Zinc Plated Material Grade/Class Ungraded Tensile Strength 120 000 psi Ring Type Housing Ring Clearance Diameter Type Expanded