Factory disc brake rotor question

The loose studs appear to be old original KH. I'll look for new good ones. Hopefully.
I'll haul them to machine shop for skinning.
Oh yeah. They press into the hubs. I'm banking that's a replacement rotor, because factory rotor stud holes were small enough the splines would press in them as well. I would install the new studs put it all together and let it ride. No need to swedge anything.