COUNTERBORE DIAMETER: 4.750 IN. NOMINAL; COUNTERBORE DEPTH: 0.6250 IN. NOMINAL; TAPER LENGTH: 8.8750 IN. NOMINAL; DISTANCE FROM CENTER OF BORE TO BOTTOM OF KEYWAY: 2.3125 IN. NOMINAL; FURNISHED ITEMS: 2 CROSS KEYS; TAPER PER FOOT: 1.000 IN. NOMINAL; 4 KEYING FACILITIES PROVIDED; KEYING FACILITY SPACING IN DEGREES: 90.0; KEYING FACILITY WIDTH: 0.6250 IN. NOMINAL; KEYING FACILITY LENGTH: 8.875 IN. NOMINAL