Richard Beverly said:
Greg his last post he says that they will not thread together, so it is a different thread. So i question if they definitely SJ.
Richard, upon closer closer inspection, I guess I’m a dope and was wrong. By habit for years I don’t like forcing things, so when I took a single (old) screw and tried to thread it into a single newer body, I hit resistance, so I stopped. However this morning since it was nice and cool out, and the house was quiet, I took several apart and found that it must have been just a little machining variance, a buggared thread, or some dirt, or something. When taking several of each apart and trying pieces into pieces, most fit each other fine.
Here is a picture:
So here is picture proof of what I believe to be both old and not-so-old (newer-ish) Split Jaw rail clamps!
Thanks to all!