Single Point Thread Mills

[komatias]

Generally... and then there are these:

http://www.drill-service.co.uk/Produ...20000&Tool=799

[cropwell]

And these from Germany http://www.sorotec.de/shop/Cutting-T...illing-cutter/ delivery is fairly quick

[komatias]

Are those Carbide?

[cropwell]

I think so, but I will check with Sorotec.

[cropwell]

Yes the Sorotec thread mills are carbide.

[uli12us]

Datron https://www.datron.de/de_de/cnc-frae...er.html#_c4992 and paul horn https://www.phorn.de/produkte/fraesen/ both in Germany making thread mills as well. The horn parts are for larger diametres. If you have thread tools for a lathe, then you can use these parts on the mill as well, if you can clamp it in a collet.

[magicniner]

I have a range of metric and imperial thread mills for specific jobs but for oddball OD and for internal stuff down to about 11mm I use one of these -

http://www.iscar.com/eCatalog/Item.a...FSTYP=M&srch=1

With a threading tip, there are a range of tips for other purposes -

http://www.iscar.com/eCatalog/Family...geType=4&rel=I

If you can get a good deal on a thread mill that has a few teeth on a decent length shank you can grind it down to one fairly easily and cut a range of threads with it, keep in mind that if you move too far from the intended diameter for ID cutters the thread form can come out slightly off,

- Nick