[time-nuts] repairing Maser threads

J. Forster jfor at quik.com
Tue Apr 13 18:10:32 EDT 2010


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

===============


>
> cdelect at juno.com 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.
>
>
>
>
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