Acme thread mills come in both acme and stub acme configurations. Different tools are available to cut the internal and external thread.
SPTM - Acme / Stub Acme
SPTM Thread Mills - Internal Stub Acme
SPTM Thread Mills - Internal Acme
TM - Metric Thread Mills -30 degree Helical Flutes - Solid Carbide - Full Profile
TM - Metric Thread Mills -15 degree Helical Flutes - Solid Carbide - Full Profile
TM - Metric Thread Mills -Straight Flute - Solid Carbide - Full Profile