Bowed Internal Ring System of Measurement Inch Location Style Internal Thickness 0.042 in Fits Shaft Diameter Not Applicable For Bore Diameter 7/8 in Fits Groove Diameter 0.931 in Fits Groove Width 0.062 in Fits Groove Depth 0.028 in Free Inside Diameter Not Applicable Free Outside Diameter 0.971 in Clearance Diameter 0.6 in Material Steel Finish Black Phosphate Material Grade/Class Not Graded Tensile Strength Not Applicable Ring Type Bowed Internal Ring