"Arjun Sharma" wrote in message
...
On Wednesday, October 18, 2017 at 6:44:04 AM UTC-5, Arjun Sharma wrote:
Hi there. I bought a bunch of big aluminum screws to help secure an
aluminum pergola I'm building
(https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1)

I'd like to remove the zinc plating to reduce galvanic corrosion (I'll
probably anodize the screws). I Googled it and found a couple tutorials
around using citric acid and another using another type of acid. However,
when I went to the hardware store, they had nothing of the sort.

Any suggestions for the best way to go about this (or where to get a
strong enough acid) ? Thanks!

Thanks for the input, everyone.

Any idea what people use, then? I know pergolas (and other structures) made
from aluminum are quite common. Surely they have some mechanism for
attaching the aluminum to the ground, wall, or in my case parapet wall.

I don't mind just using these screws, assuming they're zinc-plated steel. I
just was worried about galvanic corrosion over time.

You could electrically isolate the bolts by using a plastic sleeve and
washer to keep the steel screw from actually touching the aluminum.