"DISTANCE FROM CENTER OF BORE TO BOTTOM OF KEYWAY: FIRST END, 0.524 IN. NOMINAL; PITCH DIAMETER: SECOND END, 0.600 IN. NOMINAL; 2 KEYING FACILITIES PROVIDED FIRST END; KEYING FACILITY SPACING IN DEGREES: 180.0; KEYING FACILITY WIDTH: FIRST END, 0.157 IN. NOMINAL"