I have removed a twin socket from its back box.
When I came to fit the socket back in, I realised that one of the threaded lugs
for securing the socket to the box has in the past has had the thread slightly
damaged such that bolt won't really tighten up.
It looks OK as the good bold tightens up well and pulls the socket back to the
plaster. But it's not perfect.
Is there a trick for "tightening" the thread such that the bolt will hold in it
securely and tighten up,
I wondered about epoxy putty or similar to put in the lug hole (ear??) and
effectively make a new thread.
Any ideas please?
On Monday, 12 December 2016 15:40:45 UTC, Larry wrote:
Squeeze the lug gently with pliers. You can get M3.5 rethreader tools from electrical places.
M3.5 is for socket faceplates, M4 is for conduit fixings.
You can put an anti-slip washer between the nut and the lug, or just
pull the bolt back as you tighten it. Obviously this won't work if there
isn't space in the box behind the lug for a reasonable length of extra
thread. Some backboxes have a hole there so you can drill into the wall
to allow for long screws.
But it would be close to impossible to hold the nut in place while
screwing the screw in. There's no way you could bend your fingers
round to hold the nut in place, there wouldn't be enough space between
the socket (or whatever you're fixing) and the box to get your fingers
in (and I have fairly small fingers).
The anti-slip washer would help once you have got the screw into the
nut but I don't believe you'll ever get that far.
A rather smooth trick I saw a pro do once is:
drill right through the back of the backbox, inline with the lug (ie
through the same hole).
Then tap the hole in the back to M3.5 and use a super long screw.
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