[ARC5] Bristol 6 flute set screws for knobs

[Dave Merrill]

The knob in the photo is from an R-390.

On Thu, Jun 26, 2025, 12:15 PM Gene Smar <ersmar at verizon.net> wrote:

> Dave:
>
> That knob looks like one from my Drake C-line. Try ePay or a Drake parts
> site for a knob, then see if the set screw fits.
>
>
> 73 de
> Gene Smar AD3F
>
> Sent from my Radio Shack TRS-80 model 100 laptop
>
> On Thu, Jun 26, 2025 at 1:36 PM, Dave Merrill
> <r390a.urr at gmail.com> wrote:
> Are these available anywhere? McMaster Carr has a vast inventory of set
> screws, none of them Bristol 6 flute that I can find. I believe they are 8
> X 36 thread.
>
> I tried posting on the R-390 reflector with no responses. I guess we add
> them to the 'unobtanium' list.
>
> --... ...-- Dave N9ZC
>
>
>
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