I have a great collection of R8 horizontal arbors (for use with a
Bridgeport horizontal milling setup) but 3 of my arbors are missing
the nuts. I'm looking for:

1¼-7 LH
1-8 RH
3/4-10 LH

I'm sure I could get some 12L14 and turn them on the lathe and get
reasonable finish on the threads, but I'd rather buy them and get the
ground threads.

Anyone have a source for stuff like this?

Grant