Agreed!
I've been working on Rohn 25/45/55 for 40 years... Never had an issue with
any bolts or nuts.
There are NO washers on this series of towers.
73
Jim W7RY
-----Original Message-----
From: john@iguanavilla.com
Sent: Wednesday, May 07, 2014 6:20 PM
To: towertalk@contesting.com
Cc: mryan001@tampabay.rr.com
Subject: Re: [TowerTalk] ROHN TOWER BOLTS
What is wrong with the standard Rohn hardware? I had a Rohn 55g tower in
Aruba 1/3 mile from the sea. Corrosion was a huge problem. Big grips
lasted only three or four years, the tower was painted multiple times a year
and still developed holes. When I took it down after a decade the original
tower hardware was in excellent shape.
John KK9A - P40A
To: Mike Ryan <mryan001@tampabay.rr.com>, towertalk@contesting.com
Subject: Re: [TowerTalk] ROHN TOWER BOLTS
From: Tom Nicholson <Gunsrus1942@Comcast.net>
Date: Wed, 07 May 2014 16:41:00 -0400
NO FLAMES HERE!
Here is what I have for choices:
Not the average Home Depot / Lowes "Stuff"
A286 Super Alloy-With approximately 26% nickel and 15% chrome, this
iron-based super alloy brings you the strength of alloy steel with corrosion
resistance similar to 18-8 stainless steel. It meets ASTM A453 Grade 660 and
is not magnetic. Screws have a minimum Rockwell hardness of C31 and minimum
tensile strength of 140,000 psi.
17-4 PH Stainless Steel Alloy-Combines the high strength of alloy steel with
the corrosion resistance of stainless steel. It meets ASTM F593 Grade 630
and is magnetic. Screws have a minimum Rockwell hardness of C31 and minimum
tensile strength of 140,000 psi.
Alloy 20 Stainless Steel-Also known as Carpenter 20 screws. With excellent
resistance to sulfuric acid, these screws have a minimum tensile strength of
80,000 psi.
I also have a choice of 18-8 or 316 SS Nylon lock nuts.
Tom W1ALZ
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