Some form of turnbuckle?

Tie-rod end (minus the ball joint)?

Part of some larger object that doesn't have a specific name of it's
own?

Does the part with the loop thread into the next piece, and if so, do
those threads go the opposite way of the ones shown?

Is the the "ring" near the center sooth, of does it have flats so it
can be held/turned with a wrench?

Of course, if you meant 1" long rather than 1" in diameter, it's
probably not a tie-rod...