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Thread Mills

Thread Mills

Thread mills cut a thread using helical interpolation. Helical interpolation involves moving three axes simultaneously. The X and Y axes move in a circular motion while the Z axis moves in a linear motion. This allows the same thread mill to cut both right and left-hand threads and to produce a variety of thread sizes (of the same pitch). All thread mills are made from premium submicron carbide and are stocked with and without an ALTiN+ coating. They are ground on state-of-the-art CNC tool-and-cutter grinders and have been engineered for high performance. Programming assistance is available.

External - UNJ

These straight flute thread mills have the root radius that is required for the external "UNJ" thread.

SPTM

Single profile thread mills will cut internal and external threads in a range of thread sizes with minimum side cutting pressure.

TMLR

Long reach thread mills have three teeth and a helical flute that excel in internal deep threads and hard-to-cut materials.

New
Straight Flute

Coolant Through Options. Straight flute thread mills come in a large variety of sizes and are crest cutting for internal threads only.

Staggered Tooth - UN

Staggered tooth thread mills will cut internal and external threads. Every other tooth removed in a staggered pattern for reduced side cutting pressure.

15° Helical Flute

The 15° helical flute thread mills are non-crest cutting for internal threads only. The helical flutes distribute the side cutting pressure.

30° Helical Flute

The 30° helical flute thread mills will cut internal and external threads. The helical flutes distribute the side cutting pressure.

New
NPT / NPTF

Coolant Through Options. NPT thread mills come in straight, helical and staggered tooth design. They will cut both internal and external threads. NPTF are for dryseal applications.

BSPP / BSPT

These straight flute thread mills have a 55° thread profile and cut the British Standard Pipe Parallel (BSPP) and the British Standard Pipe Taper (BSPT).

SPTM - Acme / Stub Acme

Acme thread mills come in both acme and stub acme configurations. Different tools are available to cut the internal and external thread.