>>
http://www.pomonaelectronics.com/pdf/d72930_002.pdf
>
> Yes, that's what I'm looking for, except for the stud
> termination.
Pomona 6387? It has a solder turret terminal.
http://www.pomonaelectronics.com/pdf/d6387_101.pdf
Otherwise, it might be possible to buy the jacks that take the strange
nut, and replace the strange nut with a hex nut. At least for the
Pomona parts, though, the strange nut seems to have a strange thread -
one drawing of the jack implies that the major diameter of the threads
is about 10.8 mm, which is *in between* M10 and M12 threads, and also
*in between* US 3/8 inch and 7/16 inch threads.
Matt Roberds