I have seen this strap clamps where there is a thick bolt that has a handle on the end whose job is to just be rotated to bring up and down what is essentially a nut. I have a few designs I would like to potentially make with this hardware but I cannot figure out what such hardware is called. Obviously I could kind of make my own here with a bolt, a nut, and a metal plate or a ball bearing but I am guessing there is a name for this. I could then figure out some way to get a handle on that bolt.

But I am guessing there is a name for this hardware? Where else have you seen it used.

My reverse image searches just think its a screwdriver.

https://preview.redd.it/gjemcenpzybd1.png?width=498&format=png&auto=webp&s=5b3eefaf886eabb14818335e7af5bbac0d7ba406