keeping electrical conductivity on screw thread
Dave M wrote:
"Blah" wrote in message
...
john royce wrote:
I have one of those small LED pocket torches (flashlight). To turn it
on
and off, I have to screw the end up towards the bulb end to compress the
contacts against the battery.
The thread in the screw end is an extremely 'loose' fit and tends to
'unscrew or scew up' when it sits in the car glove compartment for a
while.
Is there a way to *stiffen* this 'loosness' in the thread, without
reducing
the electrical conductivity?
It needs to make good electrical contact for the torch to work, so I
guess
that rules out putting a dab of wood glue on the thread? Thanks for
any
advice.
run a rough file over the threads
Wrap a few turns of Teflon pipe thread tape around the male threads so that
the looseness is removed. You might have to rewrap frequently, depending on
how much use the flashlight gets.
Another suggestion is to cut a gasket out of a sheet of very thin rubber or
vinyl sheet, lube it with silicone grease and wrap the gasket around the
threads.
won't that insulate it? ...
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