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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?

fgregg
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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:

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

JPhi1618
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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 Jul 13 '20 at 16:02