General Advantages of thread milling:

  • Threads to different tolerance classes can be produced with the same cutter
  • Tool breakage typically does not entail scrapping of the workpiece
  • Shorter cycle times
  • Fantastic surface finishes on the threads since entire thread form is being cut with the thread mill
  • Thread milling produces shorter chips which alleviates chip control issues you typically see when tapping
  • Threads can be cut down to the bottom of blind holes

Further Reading

Thread Milling Case Studies

Benefits of Variable Helix Angles in Thread Milling

Advantages of Left-Hand Spiral / Right-Hand Cut Thread Milling