I have seen some with a hex headed pivot bolt, a thread and split pin hole.
I have seem these fastened with a castle nut, but mine is completely different, and I can find nothing to reference it.
The bolt has a round head, and the other side seems to have no nut or thread that is visible, and no split pin or nut of any kind.
I have tried screwing/unscrewing, tapping and just about every other motion you can think of to no avail. It simply will not move in and out more than 1mm.
There must be some sort of pin or thread I cannot see, but as I said, I have tried rotary motion to no avail.
Any suggestions would be welcome.















