Inverted External Ring System of Measurement Inch Location Style External Thickness 0.062 in Fits Shaft Diameter 2 in For Bore Diameter Not Applicable Fits Groove Diameter 1.886 in Fits Groove Width 0.068 in Fits Groove Depth 0.057 in Free Inside Diameter 1.85 in Clearance Diameter 2.36 in Material Steel Finish Black Phosphate Material Grade/Class Not Graded Tensile Strength Not Applicable Ring Type External Inverted Ring Thickness Tolerance +/-0.003 in