Metal, about 1 inch in diameter (i.imgur.com)

submitted 1 year ago by ultimike@lemmy.world to c/whatisthisthing@lemmy.world

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[-] BadEngineering@kbin.social 3 points 1 year ago

Looks like a spanner nut and the cap appears to be a jam screw to lock it in place.

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this post was submitted on 09 Oct 2023

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What is this thing?

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