Thread milling into hardened steels 45-60HRC

JEL®  MGF XH Micro M1-M2.5

With the JEL®  MGF XH Micro, small diameter threads can be milled into already hardened components. This eliminates the need for complex re-machining operations due to hardening distortion.

The JEL® MGF XH Micro thread mills also serve a double-duty with 90-degree countersinking taking place in the same operation.

They are designed without internal coolant for increased stability, and feature TiAlN coating, making thread milling possible up to 1.5xD in the M1-M2.5 range.


  • Hardened steels between 45 and 60 HRC
  • Cuts threads directly into hardened components such as aerospace and medical parts
  • Counter-clockwise cutting from M1 to M2.5

Your PLUS:

  • Thread milling directly into hardened material - translates into time and cost savings
  • Reduction in tool costs: 90° countersinking and thread milling with a single tool




           Thread milling up to 60HRC