Date: Wed, 27 Jul 2016 19:15:38 -0700
From: Grant Saviers <grants2@pacbell.net>
To: Jim Thomson <jim.thom@telus.net>, towertalk@contesting.com
Subject: Re: [TowerTalk] Lockwasher Comparison
Surfaces need to be clean, the opposite of what is desirable for
structural fasteners that should be lubricated. A325 5/8" hot dip
galvanized structural bolts I've bought for Rohn 65 tower leg flanges
have had a blue wax coating. So they are "1 for 3" (no O2 is ok, no
exposed Fe not ok, not clean not ok) re using Loctite. Hence these bolts
got NordLocks. Thru leg bolts in shear such as R25/45 don't have the
axial stress cycling of flange leg towers, so most any nut that doesn't
fall off is fine.
Grant KZ1W
##Ok, so what does Rohn supply for nuts, bolts, flat washers and lockwashers,
on their 25/45/55/65 towers ??
## a buddy with 55G... has had one of the leg bolts fall right out, and ended
up at base
of the tower ! That was at the junction of the top 2 x sections.
## Internal tooth and external tooth lock washers usually work pretty
reliable.
Jim VE7RF
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