If Corby is installing an ion pump, I suspect the bolts are on something like a Conflat flange which requires a fair amount of torque to compress the metal gasket and seal right. The bolts could well have been stripped out trying to fix a leaking seal.
Nuts would work, if the holes go through. Helicoils can be used on blind or through holes. For blind holes you need a bottoming Helicoil tap. -J0hn =============== > > [email protected] said: >> I recently installed a new ion pump in an EFOS2 Hydrogen maser and two >> of >> the mounting holes (metric M5) have damaged threads. > >> The bolts go in fine but wont tighten and if you wiggle the bolt you can >> pull it out. > > That sounds fishy. > > Do the holes look chewed up? Did somebody strip the threads? > > Are you using the right size bolt? > > Can you get a nut on the back side of the hole? > > > > -- > These are my opinions, not necessarily my employer's. I hate spam. > > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
