"CRES EMS73649-2,FSCM 73342,48 BLADES EQUALLY SPACED ON OUTER PERIPHERY,6.409 IN. MIN,6.411 IN. MAX OD,EXTERNAL SPLINE,17 TEETH,0.562 IN. MIN,0.567 IN. MAX OD,0.5313 IN. NOM PITCH DIA,30 DEG PRESSURE ANGLE,EXTERNAL THD,0.8438 IN.-32 UNJS CLASS 3A THD,0.8378 IN. MIN,0.8438 IN. MAX OD. FLIGHT SAFETY CRITICAL AIRCRAFT PART"