See the first photo in the first post of the link provided. That is what I have found on my Fords. The "cup" shaped end is threaded and the short carriage bolt (with square hole in top) threads into that. There is no cage nut attached to the frame, the chatter rod end is threaded to take the bolt. You may want to try a "Chatter Rod" search on this forum. There are dozens of previous threads concerning this matter.
http://fordbarn.com/forum/showthread...t=Chatter+Rods