✅ SOLVED a pair of…?

[Older The Better]

Last one for now. I’m guessing they are related because they have the same feet/lugs and there is a faint 51 above the leg on the loop shaped deal other than that I got nothing.

 

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[pepperj]

Be a lot better if you posted up something easier.😆
I got nothing.

 

[ToddsPoint]

Jig parts for a machine like a milling machine. The tabs on your parts fit into the grooves on a machine bed like this one. Just a guess.

 

[HuntinDog]

Bed Parts

 

[CreakyDigger]

Those must have nearly given you a headache when they banged in your headphones.

 

[Plug N Play]

Bed Parts

Good call HuntinDog. Old bed frame and rail hardware.

 

[Older The Better]

Bed Parts

Well done! I don’t see what their function in a bed frame is, but that’s obviously what it is. Cool thanks for the help putting together another piece of the puzzle that this site is.
And thanks to plug n play for the visual confirmation