Seems familiar but not sure - help?

[callicles]

It is notched. Could it be from a cotton scale? Or is it some tool?
thanks!

 

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[Nitric]

Since no one chimed in.... I'll give this a try.

My first thought when I saw the picture was a "key" for concrete forms. They are wedges that you pound or push down to tighten the forms. The forms are like panels or rails, all different sizes. Then after the concrete is poured, the key is knocked out with a hammer so that the forms can be pulled or pried off.

That's my first thought when I saw the picture. I know I've seen that before. I think it was something to do with concrete forms.

Here's something similar on this page..

https://www.diytrade.com/china/pd/11767424/snap_tie_for_aluminum_form_system.html

 

[creskol]

I think it is a spike from an old spike-tooth harrow,

 

[P.ALLEN]

Its a table leg pin to a formica top table. I have multiple of those for a table at the house.

Edit: I also like both of the above suggestions as well, so it could be a toss up.