Hi,

I've got a cross threaded bottle boss that is now spinning in the frame (wasn't me – I bought it second hand like that). It looks like some sort of threaded insert that is fitted into the frame – I'm guessing some sort of rivet thing.

Anyone go any thoughts on how to get it out without knackering the frame?

And if I do get it out where can I get a new threaded insert?

Any suggestions welcome.

It's a rivnut, with the correct tool they can be tightened up, also check out onzadogs earlier post about rivnuts.