Meet Carmex MT3 FSH thread mills—a high‑precision solid carbide solution designed for metric M4 x 0.7 threading in hard materials. Built for engineers and machinists who demand clean, accurate threads in demanding alloys, these tools push performance beyond standard MTSH offerings.

• Thread Type & Size: Metric M4 x 0.7 thread milling capability for precise internal threads.
• Material & Grade: Solid carbide with MT3 ultra‑fine grade for exceptional stability and longevity.
• Coating: Multi‑layer PVD coating to boost heat resistance and wear life in harsh cutting environments.
• Flute Count: Up to 7 flutes on select models to enhance rigidity, cutting action, and chip evacuation.
• Hard Material Capability: Optimized for hard materials up to 65 HRC, including challenging alloys and steels; suitable for machining superalloys.
• Shank & Compatibility: MT3 shank interface designed for secure fitting in standard tool holders.
• Performance Advantage: Designed as an evolution from the MTSH line, delivering improved edge stability and cutting efficiency in tough applications.

These thread mills enable reliable, repeatable threading in difficult materials, reducing cycle times and delivering crisp, plug‑and‑pull free threads. The MT3 ultra‑fine grade and PVD multi‑layer coating combine to resist heat and wear, extending tool life in production runs and challenging prototypes alike. Ideal for aerospace, automotive, and precision engineering projects where robust performance and consistent thread quality matter most.