The 30° helical flute thread mills will cut internal and external threads. The helical flute distributes side cutting pressure.
30° Helical Flute - Metric
SPTM Thread Mills - Internal Stub Acme
SPTM Thread Mills - Internal Acme
TM - Metric Thread Mills -15 degree Helical Flutes - Solid Carbide - Full Profile
TM - Metric Thread Mills -Straight Flute - Solid Carbide - Full Profile
TM- BSPP / BSPT Thread Mills - Straight Flute