** PLEASE NOTE - WE ARE CLOSED FROM DECEMBER 23rd UNTIL JANUARY 5th, 2026 AND ORDERS WILL NOT BE SHIPPED DURING THIS TIME **
These straight flute thread mills have the root radius that is required for the external "UNJ" thread.
External - UNJ
Acme Internal SPTM Thread Mills
Acme Single Profile Thread Mills
BSPP / BSPT Thread Mills - Straight Flute
Metric 15 degree Helical Flute Thread Mills - Solid Carbide - Full Profile
Metric 30 degree Helical Flute Thread Mills - Solid Carbide - Full Profile