[Elecraft] K3 VFO A tuning knob set screw

[Vic K2VCO]

John H Gibson wrote:

> I can use the allen wrench to extract the set screw from the VFO A knob. When I 
> hold the set screw against my 8-32 tap, the threads mesh, and the diameters 
> appear to be the same. 
> 
> Even though the set screw thread meshes with that of my 8-32 tap, the set 
> screw is not long enough to make me feel certain that they are the same, rather 
> than merely being "close." I am not familiar enough with nominal metric threads 
> to know whether there is one that is close to 32 threads/inch.
> 
> There is an identical set screw in the VFO B knob. Either set screw will thread 
> easily into the VFO B knob, but either set screw will go just so far and then bind 
> in the VFO A knob.

Just get a long screw that you know to be 8-32 and run it into the hole 
in the knob. If it goes easily (at least up to where the thread ends) 
then it is probably 8-32.
-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco