"CRES,HS44-73030,36 TO 40 ROCKWELL C SCALE HARDNESS,STYLE,PLAIN,RECESSED FRONT FACE,PROTRUDING BACK HUB,5.030 IN. DIA O/A,4.750 IN. PITCH DIA,0.480 IN. W FACE,SPLINED BORE,122 TEETH SPLINE QTY,30 DEG SPLINE TOOTH PRESSURE ANGLE,9 EXTERNAL GEAR TEETH ON A BASIS OF 24,5.0526 IN. DIAMETRAL PITCH,25 DEG PRESSURE ANGLE,45 DEG PITCH ANGLE,LH SPIRAL,SHOTBLAST GEARTEETH,MAGNETIC INSPECT PER MIL-I-6868"