On Thu, 28 Jun 2012 18:26:11 -0700, "anorton"
wrote:


wrote in message
.. .
I'm quoting a job that has a stainless 8-32 set screw bonded into a
brass part. The exposed threads of the screw and free threads in the
brass part cannot have any bonding agent on them. I'm thinking that
Loctite 268, a stick type threadlocker, might work except for the
small size of the screw. I don't know if the 268 can be applied
cleanly to such a small screw or even if it will get down into the
threads. Anybody know?
Thanks,
Eric

I think this is a situation where you go back to the customer and ask if the
adhesive-free part of the stud has to extend exactly to the surface or could
they allow, lets say, a 0.030" region near the surface that may have some
adhesive.

If they say no, ask if there could be a small shallow counterbore or
countersink around the threaded hole that would let some adhesive ooze out
without extending above the surface.

The exposed threads pretty much need to be loctite free because
another part screws on and off. There is going to be a thread or so
with loctite on it and that will be OK. But not two threads. And the
female threads can't have excess loctite either. That's why I don't
want something that wicks. It looks like the stick stuff will work.
Eric