"END NEAREST TAPPED HOLE MACHINED TO A 1.873 IN. MIN, 1.877 IN. MAX DIA FOR A LG OF 5/8 IN.; DISTANCE FROM CENTER OF BORE TO BOTTOM OF KEYWAY: BOTH ENDS, 0.810 IN. NOMINAL; 1 KEYING FACILITY PROVIDED EACH END; KEYING FACILITY WIDTH: BOTH ENDS, 0.251 IN. NOMINAL"