Carmex FSH Thread Mills are solid carbide, fast-type tools designed for precise internal threading in hard materials. Built as an improvement over the MTSH line, these mills excel with UN thread profiles (UNC, UNF, UNEF, UNS) at No. 10 x 32, featuring a robust MT3 shank for compatibility with standard toolholders.

• Material and coating: MT3 Ultra-fine grade with a PVD multi-layer coating, optimized for machining superalloys and hard materials up to 65 HRC, delivering edge stability and high heat/wear resistance.
• Flute count: Large number of flutes—up to 7 on some models—for improved rigidity, smoother cutting, and efficient chip evacuation in tough materials.
• Threading capability: Internal thread milling for No. 10 x 32 threads using UNC/UNF/UNEF/UNS standards, enabling precise, compliant threads in a single setup.
• Fast Type design: Optimized geometry that enables faster material removal and shorter cycle times without sacrificing thread accuracy.
• Shank: MT3 shank compatibility ensures broad toolholding compatibility with standard CNC holders.

These features translate into tangible benefits: you can thread hard steels, nickel-based alloys, and other high-strength materials with confidence, achieving clean thread profiles and consistent pitch. The combination of multiple-flute geometry, advanced coating, and a robust shank reduces wear, extends tool life, and minimizes downtime due to tool changes—ideal for aerospace, automotive, and precision engineering applications where hard materials are common.