Can anyone help me identify this stem binder nut

Question

This nut (pictured) fits the binder bolt from a vintage 3ttt stem. I would like to know the name of this nut, or the type of nut this is so that I can try to buy more.

So far, I've found similar things when searching the internet with keywords like "knurled", "conical", and "tapered", but haven't managed to find anything that has the flange.

Can anyone help?

Edit: For clarification, here's a pic of the nut in situ

Mike · Answer

I've found something similar (only the other way round) for Cinelli:
https://www.ebay.com/itm/Cinelli-1A-stem-clamp-serrated-section-fixing-bolt-and-nut/142719429884 and I was searching for "stem clamp serrated nut". This one has the flange.

JonR · Answer

It's called a stem clamp binder nut. The names don't get more specific than that, unfortunately. You could search for the bolt by the stem name, and maybe get lucky finding another one. It's not a super-common setup for stems; they typically used a hex nut.

If it doesn't fit a little further into the stem, it's most likely an incorrect size for the stem. The flange should sit flush when the bolt is fully tightened. The binder bolt thread only comes in a few sizes, so you may just have a bolt that "works" but is not original to the stem.

Can anyone help me identify this stem binder nut

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