Retaining Ring External 0.042 in Thk PK10 System of Measurement Inch Location Style External Thickness 0.042 in Fits Shaft Diameter 11/16 in For Bore Diameter 5/8 in Fits Groove Diameter 0.588 in Fits Groove Width 0.039 in Fits Groove Depth 0.018 in Free Inside Diameter 0.635 in Clearance Diameter 1.01 in Material Stainless Steel Finish Plain Material Grade/Class 18-8 Tensile Strength 150 000 psi Ring Type External Retaining Ring Clearance Diameter Type Expanded