Internal Medium Duty Spiral Ring System of Measurement Inch Location Style Internal Thickness 0.025 in Fits Shaft Diameter Not Applicable For Bore Diameter 5/8 in Fits Groove Diameter 0.651 in Fits Groove Width 0.03 in Fits Groove Depth 0.013 in Free Inside Diameter Not Applicable Free Outside Diameter 0.658 in Clearance Diameter Not Applicable Material Steel Finish Plain Material Grade/Class Not Graded Tensile Strength Not Applicable Ring Type Internal Med Duty Spiral Ring