Re: [TowerTalk] Anchor Bolt Grade

[Bob K6ZZ via TowerTalk <towertalk@contesting.com>]

Hi John,

Sorry, I should have been more specific.  I meant to say ASTM F1554 Grade
55 bolts.

Thanks, Bob

On Wed, Apr 22, 2026 at 9:55 PM <john@kk9a.com> wrote:

> Probably no one other than the tower manufacture should answer this but
> ASTM
> F1554 may be of help.
>
> John KK9A
>
>
> Hi Folks,
>
> Is there any downside to using anchor bolts with a tensile strength that
> exceeds the tower foundation design requirements?  All other specifications
> would be the same other than Grade.
>
> I am helping a friend reinstall a UST HDX-689. The foundation design
> specifies Grade A36 headed anchor bolts; however, the supplier can provide
> Grade A55 bolts for the same price with a faster delivery time.
>
> I assume this would not be an issue, but I wanted to verify before
> proceeding.
>
> Thanks,
>
> Bob K6ZZ
>
>
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