Odd fittings: what are these for?


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Old 01-19-21, 06:27 PM
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Odd fittings: what are these for?

I'm probably not the only one on this forum who enjoys sorting through a huge pile of miscellaneous fasteners and finding interesting things. Recently I came across an odd metal fitting that looks like it would be used to attach a bolt to two screws, at right angles:



The central hole is I think 5/16" in diameter, threaded at somewhere around 14 TPI. Note the two imprints on either side of the threaded hole; it looks to me like these are meant to hold coarse-threaded screws, if you were to bolt a pair of the fittings together, like so:



(The bolt shown above was in the same pile of fasteners, but I don't know if it was originally meant to be used with these fittings.)

If I'm right so far, you could do something like the following with this setup:



But: under what conditions? To accomplish what???

The only thing I've been able to come up with is perhaps threading pairs of these at intervals on a long rod, parallel to ceiling panels or drywall or something, that would allow you to attach the paneling to the rod. But who does this???

Anybody know what these are?
 
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Old 01-19-21, 06:59 PM
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Welcome to the forums.

Those are Unistrut (channel) nuts.



The Unistrut gets bolted to the wall and is used as a mounting track for many things including conduit. Unistrut stuff
 
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Old 01-19-21, 07:05 PM
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Aha! So the coarse threads are for the tracks in the track piece, not for screws?

Makes much more sense than what I came up with. Thank you!
 
 

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