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Michael A. Terrell Michael A. Terrell is offline
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Default Steel bolt in aluminum: anti-seize or anti-ox?


Don Foreman wrote:

On Fri, 28 May 2010 18:34:37 -0400, Bob Engelhardt
wrote:

I am repairing an aluminum brake (i.e., a brake for bending aluminum
house flashing/cladding). It is made of aluminum castings and
extrusions, held together with steel bolts and screws. Every single
bolt/screw is corroded in place! Not so much rusted as bound-up by
corrosion of the aluminum it's in. AND ... all the screw are Phillips
head! &!@^&%^%$&*?!

Anyhow, I WILL get the screws out and when I put it back together I will
not use Phillips heads and I will coat them. So, the question is: do I
coat them with anti-seize, or with anti-oxidant? If anti-seize, does it
matter which form?

Thanks,
Bob


Burndy Penetrox A. It's used on aluminum antenna towers. The
metallic particles are zinc. $13.95 for an 8 oz squeeze bottle, a
lifetime supply for the likes of we. I'd give a cite but I'm on very
slow dial up for a few days. Google Penetrox, you'll find it.

I smear a dab of this stuff on ally lightbulb bases before screwing
them in. I haven't had a stuck light bulb in a decade.



I had to remove stuck bulbs from a pair of fixtures over my
fireplace. I put a couple drops of Breakfree on top of the bulbs one
eveining, and unscrewed them the next morning with no problems. No
telling how long they had been there. The sockets were brass, and the
bulb bases were cheap aluminum.


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