UN and Metric 15° Helical Thread Mills
Smooth, efficient internal thread milling for UN and metric threads.
SCT 15° Helical Thread Mills are built for internal thread milling applications where smoother cutting action, chip evacuation, and cycle time matter.
With multiple cutting teeth and 15° helical flute geometry, these tools help reduce side-cutting pressure, support smoother operation, and improve efficiency compared with single-profile thread milling in the right application.
Use 15° Helical Thread Mills when you know the thread size, the application is internal, and production efficiency is the priority.
PRODUCT FINDER
Find the right 15° Helical Thread Mill
UN 15° Helical Thread Mills
Best for efficient internal UN thread milling where smoother cutting action, chip evacuation, and reduced cycle time are priorities.
Metric 15° Helical Thread Mills
Best for efficient internal metric thread milling in repeat applications where smooth cutting and production consistency matter.
QUICK FIT
Is a 15° Helical Thread Mill right for your job?
15° Helical Thread Mills are a strong fit when you need a production-friendly option for internal UN or metric threads. They are especially useful when the thread size is known and efficiency matters more than broad size flexibility.
Internal UN or metric thread milling
Smoother cutting action than straight-flute geometry
Improved chip evacuation in internal threads
Good fit for repeat production threading
Start with the SCT Thread Mill Selection Guide, or contact our team for application guidance.