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Aluminum 5052 & Type of Fasteners

2005

I have a product that consists of three components. They are each Alum. 5052, and I have had each of them powder coated separately. When I assemble the tree together, should I use a stainless steel 18-8, or silicon bronze screw to secure them together. This product will be outdoors, but in "middle America" ( not in a coastal area)

35206

Please help.

Thank you

Dennis Wilson
gutter brackets - Lexington, KY. USA

2005

Why don't you use aluminum screws?

Then you wouldn't have any galvanic issues to worry about, and galling probably won't be a problem if the screws are anodized. Also, if you aren't planning on removing the screws, galling isn't an issue anyway.

Jim Gorsich
Accurate Anodizing Inc.

Compton, California, USA

2005

All aluminum screws I have ever tried shear off quite easily, even when a pilot hole is drilled. I need something far stronger.

Thank you

Dennis Wilson
- Lexington, Kentucky, USA

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