"TAPER LENGTH: FIRST END, 1.812 IN. NOMINAL; SECOND END, 1.844 IN. NOMINAL; DISTANCE FROM CENTER OF BORE TO BOTTOM OF KEYWAY: FIRST END, 1.250 IN. NOMINAL; SECOND END, 1.005 IN. NOMINAL; FLANGE WIDTH: 2.812 IN. NOMINAL; TAPER PER FOOT: BOTH ENDS, 0.375 IN. NOMINAL; HUB DIAMETER: 3.375 IN. MINIMUM AND 3.750 IN. MAXIMUM; 1 KEYING FACILITY PROVIDED EACH END; KEYING FACILITY WIDTH: FIRST END, 0.500 IN. NOMINAL; SECOND END, 0.375 IN. NOMINAL"