"COUNTERBORE DIAMETER: BOTH ENDS, 1.5005 IN. NOMINAL; COUNTERBORE DEPTH: BOTH ENDS, 2.3125 IN. NOMINAL; DISTANCE FROM CENTER OF BORE TO TOP OF KEY: BOTH ENDS, 1.000 IN. NOMINAL; PITCH DIAMETER: BOTH ENDS, 1.625 IN. NOMINAL; FURNISHED ITEMS; 1 COLLAR, 2 SCREWS; 1 KEYING FACILITY PROVIDED BOTH ENDS; KEYING FACILITY WIDTH: BOTH ENDS, 0.375 IN. NOMINAL"