this is what i meant.
the long and the short of it is,,,,,,,i want to make a pedestal base out of concrete. i need the nut, to embed in the concrete, to receive the vise stem holder.
i was really stumped about the thread size at first as well. it wasn't until i counted them and Googled, that i was able to figure out it was a unef thread. the only reason that i can figure that Wolff went with this thread pitch is because of how fine the pitch is for the application. the holder has a lock nut that is tightened after the position of the finger nut for the stem is determined. this prevents more of the base threads being exposed. unfortunately, it also ensures that this vise/stem is not used with any other pedestal then the one provided.
(look by the yellow hopper fly)