/diy/ - Do It Yourself

>>1238035
I agree with this,bushings mounted uniform, and that threaded rod/pipe looks like the one you attach a chandelier hook.

OP take a couple more pics, different angles, better lighting, etc, or can you get to the attic side of one of them?
Lots of lighting fixtures, hanging or not, just use a small nut to keep their bodies attached to short pipe on a cheap bracket that is mounted to the box.
Those lights would be simple to mount in place of the old ones, perhaps needing adapters.
It's possible you can adapt back to fan hanger, or run bolts into current box for fan hanger, but need better pics of what you have to know. There are also fans that don't hang from a ball, instead using other mounts or flush mount.

collage of random related pics