/diy/ - Do It Yourself

/diy/ I need some help.

I'm trying to take apart a super old bedframe. I have one side left to do. There's these screws in it that have a weird shaped thing at the other end. I don't know what they're called because I don't tend to work with this stuff. Do you know what pic related is called? Or how I can get them off so that I can take this pos apart and junk it for my new bed frame? I think you're supposed to be able to just screw them off with your fingers, but they're practically embedded in the wood and I can't get a grip on them.