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I'm fixing a lamp and I need a coupling nut to connect the post that contains the electrical wires to a rod that holds the shade. This looks like a normal coupling nut, but with half of the middle cut out to let the electrical wires come through.

What is the name of such a nut?

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  • You mean like this ?
    – JPhi1618
    Commented May 2, 2016 at 18:18
  • Yes. There's a bit more to the nut, but that's about right.
    – fgregg
    Commented May 2, 2016 at 18:20
  • @Mazura, I'll remove this pic now that I got an answer to avoid confusion.
    – fgregg
    Commented May 3, 2016 at 19:55

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I have no idea why, but an open coupling for a lamp is called a hickey... As in 1/4" IPS Brass Hickey:

enter image description here

I've also seen this sold on some sites as an "open cast coupling" or "open cast hickey".

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  • Yes that is a hickey, old term, a conduit hand bender is another device called to a hickey, don’t know where it originated from but on lower level electrical knowledge tests it is a question asked in Oregon.
    – Ed Beal
    Commented Jul 13, 2020 at 16:02

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