Inverted Internal Ring System of Measurement Inch Location Style Internal Thickness 0.062 in Fits Groove Diameter 1.858 in Fits Groove Width 0.068 in Fits Groove Depth 0.054 in Free Outside Diameter 1.891 in Material Steel Finish Black Phosphate Material Grade/Class Not Graded Ring Type Internal Inverted Ring Clearance Diameter Type Free OD Thickness Tolerance +/-0.003 in Standards REACH Compliant RoHS Compliant Groove Width Tolerance +/-0.004/0.000 In.