' External Retaining Ring, Heavy Duty, Carbon Steel, Black Phosphate, For Shaft Dia 1 In, Free ID 0.906 In, Thickness 0.078 In, Thickness Tolerance +/-0.003 In, Fits Groove Dia 0.938 In, Groove Dia Tolerance +0.001/-0.003 In, Fits Groove Width 0.086 In, Groove Width Tolerance +0.005 In, Fits Groove Depth 0.031 In, Clearance Dia Expanded 1.370 In, Clearance Dia Released 1.310 In, Hole Dia 0.078 In, Meets ASME, Rockwell Hardness RC47-52, Tensile Strength 150, 000 PSI, Package 10 '