What is the technical term for this?

[bandsaw]

Lee Valley has what they call "brass insert nuts" - also have a nice driver tool to install them.

[iublue]

Kind of off topic but why would you need a threaded insert for bottle stoppers?

I have turned LOTS of them and didn't use a threaded insert.

[EdL]

Guess I don't see why this won't work......When you thread the fastener in, it tightens up the insert so it holds better.....

Ed

[EricU]

Kind of off topic but why would you need a threaded insert for bottle stoppers?

I have turned LOTS of them and didn't use a threaded insert.

people have posted pics of bottle stoppers where they used a metal part for the stopper/bottle interface.  Idk if that's why the OP wants a threaded insert.  If it's permanently attached, I think a lot of the wood versions might work better than the one shown in the OP.  I recall that you can get the wood inserts that thread into the wood at the BORGs.

[Herb G]

Kind of off topic but why would you need a threaded insert for bottle stoppers?

I have turned LOTS of them and didn't use a threaded insert.

So you can sell different stoppers with different tops at the craft shows.
The pic I posted is straight from a pen turning supplier, and it's epoxied
into the stopper top so you can change either part to suite the customer.

[Cooler]

I will repeat what I said earlier.  The knurled inserts are for plastic.  They will fail quickly in wood.

The inserts you want for wood are either die cast or  machined with threads.

Die cast for soft woods:  http://ec-i21.geccdn.net/site/images/n-p.../81559.jpg

Machined brass for hard woods:  http://cfnewsads.thomasnet.com/images/la...6/6347.jpg

[Brian in sunny FL]

It's called a "knurled threaded insert" or a "knurled press insert." Google it and you'll find photos and info on where to buy.

That's what I would call it.  Found these

https://www.grainger.com/category/knurle...alog/N-8o1

[Arlin Eastman]

It's called a "knurled threaded insert" or a "knurled press insert." Google it and you'll find photos and info on where to buy.

^^^^^

Is what I was going to say too.  Made them in the Air Force for Air Craft paneling

[Steve N]

i had always heard those called a Knurled nut. Once you have a good search term, then you just need to add your sizes, and see if you can find a match.

Several on E-Bay if you need quantity

Says custom specs are available, look out wallet

Search here is awkward

[Herb G]

I will repeat what I said earlier.  The knurled inserts are for plastic.  They will fail quickly in wood.

The inserts you want for wood are either die cast or  machined with threads.

Die cast for soft woods:  http://ec-i21.geccdn.net/site/images/n-p.../81559.jpg

Machined brass for hard woods:  http://cfnewsads.thomasnet.com/images/la...6/6347.jpg

Not all bottle stoppers are wood. Ever heard of acrylic bottle stoppers?
Linky