A technical drawing of an NPS 15 Degree Helical Thread Mill with dimensional callouts

NPS 15° Helical Thread Mill

Our NPS 15° Helical Thread Mill is engineered for precision and versatility, capable of cutting NPSC and NPSM straight pipe threads, as well as NPSL and NPSH threads. Designed for superior performance in a range of materials, this tool delivers clean, accurate threading with every use. For enhanced durability and productivity, an optional AlTiN+ coating is available, allowing for longer tool life and the ability to run at higher surface feet per minute. Ideal for applications where thread integrity and consistency are critical.

Thread Diameter/Pitch
A (Tool Diameter)
B (Length of Cut)Q (Length)
S (Shank Diameter)
OAL
FlutesUncoated Tool #Uncoated EDP #AlTiN+ EDP #
1/8-270.2800.5070.0180.31253.004TM280-27NPS-H121000121001
1/4, 3/8-180.3700.6930.0270.37503.504TM370-18NPS-H121004121005
1/2, 3/4-140.4900.8930.0350.50003.504TM490-14NPS-H121008121009
1 to 2-11.50.6201.1720.0430.62504.004TM620-11.5NPS-H121012121013
2 1/2 and up -80.7401.5610.0620.75004.004TM740-8NPS-H121016121017