I have a problem with one of my sliding window latches.  I took it
apart and found that the piece on the outside of the glass has 2
threaded pieces which get held by screws that go through the bracket
on the inside of the glass.  One of those threaded pieces which seem
to be some sort of plastic, is stripped.  So that screw backed out
and was interfering with the latch mechanism.  Basically holding it
in the pressed down "unlocked" position.  I checked my parts van and
found that out of 2 vans, I have 2 good outside-the-glass parts that
don't have stripped threads.  I'm thinking about using some thread
locking compound when I put it back together, but the locktite 242
that I have says it can attack some plastics.  I'm testing it on one
of the stripped ones I have, but what does the list wisdom say about
this repair?  Thanks.

Edward