In article ,
jim rozen wrote:

In article , John
Husvar says...

Once that corrosion occurs, it's tough to get the metals to separate.
Somehow a 1/4-28 Socket Head screw in aluminum can be nearly impossible
to loosen. We have numerous twisted Allen wrenches to witness.

We usually put some anti-sieze compound on the screws when we
reassemble. So far that hasn't caused us any problems with screws
staying tight, but loosening easily when needed.

You have discovered something that motorcycle folks have known
about for a long, long time. That steel fasteners in aluminum
don't mix well when they get wet.

Stainless fasteners are a good approach, and of course moly-based
anti-sieze is a good preventative. If you are worried about loosening
then nyloc nuts are nice. As for loosening up stuck items the
difference in thermal expansion rates can sometimes be used to
advantage, I use an industrial heat gun for this.

Jim

Good thought!
Thank you.
Might help a lot.