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Re: [Amps] VHF1200 6m cabinet hardware?

To: GD0TEP <>
Subject: Re: [Amps] VHF1200 6m cabinet hardware?
From: David Gow <>
Date: Thu, 7 Jul 2022 16:47:51 -0700
List-post: <>
Are you sure they are not Bristol spline screws?  A hex  (Allan) wrench of
a close size will turn loosely in a Bristol socket.  Collins, Hallicrafters
and many industrial devices used Bristol screws.  The splines are very hard
to see in the smaller types.  They look like a worn out Allan socket.  The
wrenches are readily available today from several vendors and the common
auction site.
Dave W7VM

On Thu, Jul 7, 2022 at 1:47 PM GD0TEP <> wrote:

> Hello to the group,
> I have a Command technologies VHF1200 6m amp.
> The amp itself is fine, but it's and I'm not the first owner, and I know it
> has seen some 'issues' over the years. Thus the covers have been off & on a
> few times. As such the screws are worn and I'd like to replace them. I'm
> talking about the little allan screws.  They might be made of brass (or
> chocolate) as the allan holes are worn out, so they are next to useless.
> Does anyone know what thread size these might be please?
> 73
> Andy
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