"5BORE COUNTERSUNK 0.353"" DIA. BY 30 DEG. ON HUB END,/HUB END THREAD 0.4375-28 NEF-2, 0.170"" LG. FULL THD,/BORE CHAMFERED ON COUPLING END, 0.015"" BY 45 DEG.,/OPENING OF KEYWAY CHAMFERED 0.050"" BY 45 DEG.,/BOTTOM CORNERS OF KEYWAY TO BE 1/16"" RADIUS; DISTANCE FROM BORE CENTERLINE TO BODY KEYING FACILITY BOTTOM/TOP:0.250"" NOM.; BODY KEYING FACILITY WD:0.1876"" NOM.; KEYING FACILITY AND BORE COUNTERBORE FEATURE:NOT INCLUDED; HUB OD:0.4375"" NOM.; THREAD PROVISION:UNTHREADED; FLANGE THICKNESS:0.068"" NOM."