Rountuits keep arriving, from whence I know not.

Got out my MF #67 router plane for a good clean up.  There's a bit of 
oxidation and some crud.  I can deal with both, but I ran into something 
that I need help with.

There is an upright threaded rod which has depth adjustment thumbscrew 
an a thumbscrew that holds the holding bracket that fixes the blade in 
place.  I would like to remove this threaded rod to assure full cleaning 
and rust removal on all parts of the thread.  I don't have a thread 
gauge at hand; so I can't determine the number of threads per inch.  My 
search fu remains weak.  I have not found a web page that provides that 
information. My plan is to put 2 nuts of the proper threading on the 
post, lock them together and remove the post.

1)  Is my approach OK or is there a better way to do this?

2)  Does anyone know the thread pitch for the MF #67, or a URL where I 
can find that datum?

Thanks in advance.

Bob Hutchins
Temple, TX