"ALLOY STEEL,COMP 9310,SPEC MIL-S-13048,CASE HARDEN,CASE DEPTH 0.050 IN. M 0.075 IN. P,CASE HARDNESS ROCKWELL C 60 MIN,CORE HARDNESS ROCKWELL C 30 MIN,OUTSIDE DIA 7.000 IN L,3.675 IN. W,6.375 IN. DIA A,6.205 IN. DIA GROOVE,5.512 IN. DIA B,5.030 IN. INNER DIA,INNER DIA ON OTHEREND 2.639 IN.,1.224 IN. W,SPLINE DATA,0.500 PITCH,43 TEETH,30.0 DEGREE PRESSURE ANGLE,PITCH DIA 2.687 IN.,R DIA 2.779 IN.,T INNER DIA 2.750 IN.,CHORDAL SPACE WIDTH AT PITCH 0.098 IN"