UN 30 degree helical flute Thread Mills - full form .290" to .450" cutter diameter
30° Helical Flute - UN
The 30° helical flute thread mills will cut internal and external threads. The helical flutes distribute the side cutting pressure.
** PLEASE NOTE - WE ARE CLOSED FROM DECEMBER 23rd UNTIL JANUARY 5th, 2026 AND ORDERS WILL NOT BE SHIPPED DURING THIS TIME **
The 30° helical flute thread mills will cut internal and external threads. The helical flutes distribute the side cutting pressure.