"DISTANCE FROM CENTER OF BORE TO TOP OF KEY: SECOND END, 0.780 IN. NOMINAL; DISTANCE FROM CENTER OF BORE TO BOTTOM OF KEYWAY: BOTH ENDS, 0.786 IN. NOMINAL; FLANGE WIDTH: 1.500 IN. NOMINAL; HUB DIAMETER: 2.125 IN. NOMINAL; 1 KEYING FACILITY PROVIDED EACH END; KEYING FACILITY WIDTH: BOTH ENDS, 0.3125 IN. NOMINAL; KEYING FACILITY LENGTH: FIRST END, 3.5625 IN. NOMINAL; SECOND END, 2.913 IN. NOMINAL"