'Internal Retaining Ring, Carbon Steel, Zinc Yellow, For Bore Dia 2 7/8 In, Free OD 3.191 In, Thickness 0.093 In, Thickness Tolerance 0.003 In, Fits Groove Dia 3.051 In, Groove Dia Tolerance 0.006 In, Fits Groove Width 0.103 In, Groove Width Tolerance .005 In, Fits Groove Depth 0.088 In, Clearance Dia Compressed 2.220 In, Clearance Dia Released 2.390 In, Hole Dia 0.110 In, Meets ASME, Rockwell Hardness RC47-52, Tensile Strength 150,000 PSI, Package 10'