Reply by Lifesaver2000

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Posted on Backplate/mounting flange for "steam punk" lights?

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556 posts in 3595 days

#1 posted 09-19-2017 01:17 AM

It has been a while since I have messed with this stuff, so could be remembering wrong, but here goes.

The lamp socket you show does have pipe thread (1/8 inch), but for electrical the threads are straight iron pipe thread, vs the tapered iron pipe thread used in plumbing. That is why there is usually a locking ring on threaded conduit fittings, so that an item can be screwed in then locked, so that it can be oriented as needed.

If i remember correctly, it is possible to screw a tapered pipe into a straight thread female enough to use for something fairly light duty, but that would depend on tolerances.

Perhaps someone with more recent experience (and a better memory) will elaborate on this. I could very well be remembering something completely wrong or backwards, so get some more info before buying. A Google of “straight vs tapered Iron Pipe Threads” would be a start.

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