Used on 1240-00-344-4689. 1.7500" outside diameter external lugs 180 deg apart; 2 round keyways in cross-section 180 deg apart 45 deg from lugs; keyways 0.094 deep on 0.3750 dia circle perpendicularto bore c/l passivate surface treated round w/square keys
3a thread class right-hand 3.1240" overall length 0.5000" bore diameter 18 thread quantity per inch keyway in thd 1.590 in. lg ball type unf thread series