Bought 45G tower bolts from Paul Nyland at Custom Metal Works 1 year ago.
The were genuine Rohn. Rohn P/N on the bag.
They were course thread.
I've stacked lots of Rohn tower 45-65 and SSV... Always NC threads.
73
Jim W7RY
----- Original Message -----
From: "W0UN -- John Brosnahan" <shr@swtexas.net>
To: <TOWERTALK@contesting.com>
Sent: Thursday, February 05, 2004 7:34 PM
Subject: Re: [TowerTalk] rohn 45 leg bolts
>
> >
> >The original Rohn joint bolts were Grade 5, galvanized. That's not
> >something that Lowe's or Home Depot stocks, at least in my
> >experience. They only carry Grade 3 galvanized. Ace will have Grad e5
> >and Grade 8 hardware, but it's unlikely that it will be galvanized.
>
> Lowes stocks Grade 5 and Grade 8 bolts but they are plated not
> galvanized. Their galvanized bolts were marked with a symbol
> that I thought was for Grade 5. But I guess it is a corporate logo
> or something. Next time I will wear my glasses when checking
> their bolts. They also have some "A307" galvanized bolts that are
> only 60,000 psi. I guess what they have at any given moment is
> what they got the best deal on.
>
> >The last time I bought genuine Rohn joint bolt kits from Texas Towers
(ten
> >years ago, admittedly) they weren't galvanized, adn they were NF
> >thread. Don't know why the change.
>
> I was also surprised to see that Rohn had switched to SAE NF plated
> bolts at some point. Assumed it was to cut costs. Just that
> they are not as long-lasting as hot dipped.
>
>
> >I would suggest Grade 8 hardware. Somewhat more corrosion resistant than
> >the lesser grades.
>
> I am not sure that this would be a problem but you have to be a little
> careful about trading up as well as down. Some of the higher
> grade bolts are more brittle and known in the auto-racing game
> as "widow makers". A less brittle bolt may give a bit rather
> than just crack in half. Probably not a problem but I would be
> careful.
>
> Theoretically NF bolts should be somewhat stronger that NC bolts
> since the threads are not as deep so they can be closer together.
> But I certainly prefer the LOOK of the hot-dipped NC ones over the
> plated ones.
>
> John W0UN
>
----------------------------------------------------------------------------
----
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.577 / Virus Database: 366 - Release Date: 2/3/2004
>
----------------------------------------------------------------------------
----
> _______________________________________________
>
> 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.
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
_______________________________________________
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.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|