Is there any galvanic action to worry about when using galvanized
u-bolts with an aluminum boom?
I know stainless can touch aluminum directly but Dick's note made me
wonder about galvanized steel and aluminum being in contact (have a
couple here and wonder if I should replace them with stainless)...
George / KF9YR
[mailto:firstname.lastname@example.org] On Behalf Of Dick Green
Sent: Saturday, June 07, 2003 3:23 PM
To: Tower (Tower)
Subject: [TowerTalk] stainless u-bolts -- update
Thanks to all who responded on this. A lot of searching on the web leads
to conclude that stainless u-bolt sizes do not come in 1/8" width
increments, only 1/4" increments. However, I have found some zinc-plated
u-bolts that do come in 1/8" increments. This makes sense because
originally supplied plated u-bolts for the 40-2CD. For reasons I won't
into, plated bolts would be OK in this case (not to mention a lot
Unfortunately, my web search has not turned up a supplier who has the
sizes I need. I'll keep looking, but if anyone can point me in the right
direction, here are the specs:
Inside Width Length Thread
2 1/2" 3 1/2" 3/8"
2 1/8" 2 3/4" 5/16"
2" 2 3/4" 5/16"
1 5/8" 2 3/4" 5/16"
The lengths are not critical -- a few eighths one way or the other won't
73, Dick WC1M
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with
any questions and ask for Sherman, W2FLA.
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