[SCzEngrgGroup]

I believe the correct term is "multi-point", not "multi-tooth". Pretty much all thread-mills are multi-tooth, the difference being in how those teeth are arranged - either radially, or axially. Point is, a multi-point tool cuts multiple threads in a single pass, while a single-point tool cuts one thread at a time. Multi-point tools can cut only a single thread pitch, while a single-point tool can cut a wide range of pitches.

Regards,
Ray L.

[Bob La Londe]

I believe the correct term is "multi-point", not "multi-tooth". Pretty much all thread-mills are multi-tooth, the difference being in how those teeth are arranged - either radially, or axially. Point is, a multi-point tool cuts multiple threads in a single pass, while a single-point tool cuts one thread at a time. Multi-point tools can cut only a single thread pitch, while a single-point tool can cut a wide range of pitches.

Regards,
Ray L.

Fair enough. I was sure I had the nomenclature wrong. Anyway, I guess single point vs multi point makes more sense, however single flute single point thread mills are not all that uncommon. I have a few. No, they aren't boring bars. LOL. Although some of the micro boring bars do come with a 60 degree tip that makes them sort of useable as a thread mill.

[metalmayhem]

I believe the correct term is "multi-point", not "multi-tooth". .

commonly referred to a single or multi thread form