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[TowerTalk] Galvanized hardware questions

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Subject: [TowerTalk] Galvanized hardware questions
From: (
Date: Fri, 19 Mar 1999 17:27:42 EST
In a message dated 99-03-19 16:45:04 EST, writes:

> McMaster-Carr does have grade 2 galvanized bolts in their catalog.
>  Tensile strength is listed as 74,000 psi.
>  I realize that this is not ideal, and that something like grade 5 would
>  be better.  But the half inch bolt is also quite a bit bigger than
>  most other tower joint bolts I see.
>  Can I get the grade 2 bolts, or should I keep looking?  I assume that
>  the only concern is having the bolts shear.  Compression failure
>  doesn't seem like a problem, given the joint overlap.

Hi, Pat --

      I think your gut feeling is the one to follow. Rohn specs Grade 5 bolts
for 55G. They're 7/16 inch so not too different than your requirement. You'll
never go wrong by over-engineering something.

Cheers,  Steve   K7LXC

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