[Elecraft] K3 VFO A tuning knob set screw

[John H Gibson]

I currently am assembling my new K3 #820 and have reached the step where I 
need to mount the VFO A tuning knob. I am unable to advance the knob's set 
screw far enough to clamp the knob to the shaft and am considering running a tap 
in and out of the hole to clean up the thread.

Does anyone know the diameter and thread pitch of this set screw? If I hold the 
screw against an 8-32 tap, it seems to fit, but I am worried that it might be a 
metric thread instead.

73,
John, no8v