This is an awfully good treatment of fasteners technologies in general:
Nuts, Bolts, Fasteners and Plumbing Handbook by Carroll Smith
73
--Paul, wa0rse
* Paul Beckmann*
*Vista Meadows Homestead*
*30125 719th Street*
*Lake Township, MN 55041*
*wa0rse@gmail.com <wa0rse@gmail.com>*
*612-414-0302 (cell, leave msg)*
On Thu, Feb 22, 2018 at 5:57 AM, john@kk9a.com <john@kk9a.com> wrote:
> Since you are probably bolting against a soft aluminum plate, I would also
> use a flat washer. Of course there is always the debate that split washers
> to not work but I use them anyway. I believe Force12 used steel muffler
> clamps for mounting the boom to the plate on most of their antennas. On my
> portable C3S I replaced them with stainless steel muffler clamps from
> Summit Racing and used the original mounting plate.
>
> John KK9A
>
>
> To: TowerTalk <TowerTalk@contesting.com>
> Subject: [TowerTalk] Good Fastener Practice
> From: N4ZR <n4zr@comcast.net>
> Date: Wed, 21 Feb 2018 21:57:49 -0500
>
> I am in the process of reassembling an old F12 C3E, and noticed that there
> were no washers with it. Somewhere I think I recall reading that when you
> use split lock washers, for example with U-bolts for attaching elements to
> flat aluminum brackets, you should also use flat washers between the split
> lock and the bracket. True or false?
>
> 73, Pete N4ZR
>
>
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