In a message dated 8/24/2006 5:36:07 P.M. Greenwich Standard Time,
I'm pretty sure you can get stainless steel bolts at least to grade 5 that
you could use. Just be sure to use some sort of thread compound like Locktite
or equal to prevent seizing
I don't know if Universal or Heights recommend stainless or not, but over
the years I've had a few aluminum towers as tall as 96 feet. I've found:
1. Putting lithium grease or some sort of anti-oxidant in the joint sure
helps get them apart later.
2. Overtightening the bolts is easy to do and can make disassembly almost
impossible later, since the outside tube distorts inward acting as a vise when
trying to take them apart.
3. I've NEVER had a bolt work its way loose.
4. Aluminum tower tends to egg out on the holes from the flex in winds. My
solution was to lightly guy the tower to stop the swing.
5. Galvanized bolts create a galvanic reaction that really corrodes the
aluminum at the joint area. I switched to stainless and that did the trick.
6 Getting the steel pipe off a bottom section in one piece is a total
exercise in futility.
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