Doing it in situ.
There will come a time when, if you like to dabble with old vehicles, you will happen upon a damaged thread. And, to be fair, it can be an absolute bastard!
One minute you're tightening up a bolt into an alloy housing, the next the entire thread comes out with the bolt. And you usually only find out during reassembly and most of the work is already done. This is sod's law... par for the course... and a proper pain in the 'arris.
But there is a way. Fret not. You might not even have to strip the component completely if you know what you're doing, although that wasn't the case with this Trident: