This is kinda OT, but this group has more knowledge of small threads
that any other I can think of.
I have a fairly-stripped, threaded hole (mudguard fitting eye, if you care)
on my bicycle. If I tighten the bolt just-a-little-too-much
is slips the thread.
It's currently 5mm. What can retap to to remedy matters?
I am aware that a "minor" retap to a different pitch
would be a disaster, but the hole is quite shallow - probably
only 4-5 turns, so minor pitch changes can be tolerated,
The alternative is to re-tap to a big enough hole to
remove all the old threads, which I'd rather avoid.
So, can anyone recommend a thread with is similar (enough...) in
pitch to 5mm, but slightly greater in OD?