MFJ-868 SWR/Wattmeter
 

Jim Lux wrote:

A drop of anaerobic threadlocker would be a better solution. Most
commercially manufactured equipment these days doesn't use lockwashers
for good reason, unless it's a "heritage design" where they're counting
on the thickness of the washer or something like that.

Picking the right chemical is important (wicking vs non-wicking, various
break strengths, various cure times, etc.). Don't use Loctite 241 red on
4-40 hardware you ever want to remove.. it's stronger than the metal..
the green 290 is great stuff for "post assembly" use.

This is the grounding of an antenna coax to the chassis of a tuner. The wrong
stuff in the wrong place would be a disaster. At least with lockwashers, I
know there will be a good contact.

Geoff.

--
Geoffrey S. Mendelson N3OWJ/4X1GM
Making your enemy reliant on software you support is the best revenge.