No threads, it's pressed in. I always just knock them out. Usually when they come back from ano the pin doesn't fit so I just use a small button head
I actually tried a pair of wide mouth pliers and a metal pin, but that was by hand and nothing was locked down
So pressing could work? I
Press it out rather than hammer it out. Not having an appropriate press, I used a c-clamp and a cut off nail for a drift.