[TowerTalk] Lockwasher Comparison

[Jim Thomson]

Date: Wed, 27 Jul 2016 19:15:38 -0700
From: Grant Saviers <grants2 at pacbell.net>
To: Jim Thomson <jim.thom at telus.net>, towertalk at 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