External Retaining Ring Carbon Steel Black Phosphate For Shaft Dia 2 In Free ID 1.850 In Thickness 0.062 In Thickness Tolerance +/-0.003 In Fits Groove Dia 1.886 In Groove Dia Tolerance +/-0.005 In Fits Groove Width 0.068 In Groove Width Tolerance +0.004 In Fits Groove Depth 0.057 In Clearance Dia Expanded 2.55 In Clearance Dia Released 2.440 In Hole Dia 0.125 In Meets ASME Rockwell Hardness RC47-52 Tensile Strength 150 000 PSI Package 25