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Discuss Damaged thread on lug of metal back box in the New Member Introductions area at ElectrciansForums.co.uk.

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  1. Simon Linton
    Offline

    Simon Linton Active EF Member

    Location:
    Altrincham, Cheshire
    Business Name:
    Simon Linton - Domestic Electrician
    Can anyone suggest a way to fix a damaged screw lug on double socket back box?
     
  2. buzzlightyear
    Online

    buzzlightyear Electrician's Arms

    Location:
    star command
    upload_2017-12-5_22-25-35.png its a back box rethender one of these screw fix. never leave home with out one!
     
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  3. static zap
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    static zap Regular EF Member

    Location:
    west midlands
    Metal box ?
    3.5 tap ..or how wrong am I ?
     
  4. stevethesparks
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    stevethesparks Electrician's Arms

    Location:
    Northampton
    Re-tap it out or if too damaged and you have the depth, install a brass extension through the lug with nut on the back.
    If you don't have the depth, glue a 3.5mm nut on the reverse side.
    Failing that, if the lug has dropped off, drill the back of the box and tap it out using either an extension or longer screw.
     
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  5. snowhead
    Online

    snowhead Trusted Advisor

    Location:
    Mildlands
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  6. PEG
    Offline

    PEG Trusted Advisor

    Location:
    Manchester
    Give a spark a ring,so he can safely isolate,trim back decoration,hack out back-box,install new one with grommets,etc,re-plaster,return,match decor as good as can be expected,re-fit and test.

    .....Because sparks have kids who expect Christmas presents,that a single 3.5mm re-thread won't buy...:):):) ho ho
     
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  7. dmxtothemax
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    dmxtothemax Regular EF Member

    Location:
    Australia
    Business Name:
    David Haddock Electronic Repairs
    How badly damaged is the thread ?
    You can drill the hole out a bit
    then glue a new nut on the rear with a liquid metal adhesive.
    Use a bolt to hold it in place whilst the adhesive dries.
     
  8. KEV 1 N
    Online

    KEV 1 N Regular EF Member

    Location:
    Durham
    If the hole is too big, I’ve often re threaded the hole to 4mm, then put a M4 screw in the chuck of a battery drill and grind the head down to the right size on a file
     
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  9. SparkySy
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    SparkySy EF Member

    Location:
    Northamptonshire
    I was going to suggest that too tap it out to m4 and use a brass screw filed down in a drill. Got me out of a fix a good few times. Only problem nowadays with this is people want low profile or chrome sockets!
     
  10. 123
    Online

    123 Electrician's Arms

    It's possible to get chrome/silver M4's they don't need to be brass
     
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  11. SparkySy
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    SparkySy EF Member

    Location:
    Northamptonshire
    Ah yes I hadn't thought of that good one, I have a load of them in the back of my van somewhere that I got given. Not that I do much house bashing if I can help it, never been into it!
     
  12. electric al
    Offline

    electric al Regular EF Member

    Location:
    sheffield
    Is it the fixed lug or or the non fixed ? If it's the non fixed open it up with a screwdriver and replace it with another from a spare back box and close it back up again ensuring you apply some pressure. Otherwise as above methods .
     
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  13. Madocks
    Offline

    Madocks Regular EF Member

    Location:
    Pontypridd
    Squash with plyers and retap
     
  14. brianmoooore
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    brianmoooore EF Member

    Location:
    Devon
    If all the above fails, and the box is sunk into solid masonry, drill through the back of the box and into the masonry, push in yellow or red plastic wall plug, and fit plate with very long No 6 wood screw.
     
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