Depending on how much time vs. money you have ....
You can use 1/2-13 all thread rod for the studs.
It does not matter if the clamping studs are fully threaded
or if they have a smooth shank in the middle. Just buy some
all thread rod and cut it up.
Same goes for nuts and washers. Teco flange nuts are nice
but you can buy a box of heavy hex nuts that are almost as nice.
Teeco nuts are soft grade 2 steel, but they case harden them.
Maybe there is a working advantage or life advantage, I dunno.
As for as Tee Nuts, it is so convenient to buy them. That I
will fully admit. But the heavy handed person who likes to
over tighten things, there is a real chance they will dent up
the top of your slots in the table. This adds stress within
the iron of the table, and causes the table to banana over time.
I am of the opinion that you can make tee nuts out of aluminum,
and lake them a little longer, maybe 1-1/2" in length. I mean,
you might eventually strip the threads over years of use, but
think of using aluminum as a fuse to stop gorilla fists from
over tightening them.
Clamps is another wide open subject. You can buy a long bar of
cold steel and make some, or the Teco ones are nice, with the
serrated step blocks. Just making the argument that if this is
your home shop mill, it might not be such a bad first project to
make some of your own clamp down tooling. It is really nothing
special and not critical dimension at all.
--Doozer