"STL AMS 6323,HEAT TREAT EPS 253 ROCKWELL C SCALE 44 MIN,48 MAX HARDNESS,BLACK OXIDE SURFACE TREAT AMS 2485,INSPECTION EIS 1000 MAGNETIC,1.765 IN. QD,1.7645 IN. ID,0.910 IN. W OA,3 HOLES0.188 IN. DIA LOCATED WITHIN 0.010 IN.OF TRUE POSITION,LEFT OD CORNER CHAMFER 0.044 IN. BY 45 DEG ANGLE,RIGHT ID CORNER CHAMFER 0.020 IN. BY 45 DEG ANGLE"