[Hallicrafters] knob retaining screws

[Al Parker]

hi Douglas,
    Hallicrafters used Bristol headed screws on some of the knobs in the 
rcvrs such as SX-101's, particularly in the small knobs.  Small, and less 
frequently large,  Bristol's have 4 flutes, they are not square like deck 
screws, and not like "Torq" screws.  McMaster Carr and others can supply 
Bristol wrenches at a reasonable price.  Some sellers have unreasonable 
prices.  Xcelite makes sets of Allen and Bristol drivers with replaceable 
bits that are very handy, but tend toward the latter price range.  You can 
buy separate bits and a handle to save some $.  Google it.  The subject 
comes up regualarly on BA lists.
73,
Al, W8UT
New Bern, NC
www.boatanchors.org
www.hammarlund.info

----- Original Message ----- 
From: "Douglas" <iluznst at yahoo.com>
To: <hallicrafters at mailman.qth.net>
Sent: Thursday, October 04, 2007 12:37 PM
Subject: [Hallicrafters] knob retaining screws


> Hi,
>
> I've encountered some set/grub screws holding knobs on
> that are not allen or slotted screw, they seem to be 4
> sided. What type are they and where is a good place to
> find a wrench to remove them?
>
> Douglas
>
>
>
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