Carmex MT3 Fast Type solid carbide thread mills are engineered for high-hardness threading tasks, delivering precise metric threads in M3, M4, and M5 with 0.5 mm pitch. Built for shops that machine hard steels and superalloys, these tools combine strong edge stability with long tool life.

• Shank type: MT3 Morse taper shank for secure, repeatable mounting in compatible tool holders.
• Coating: Ultra-fine PVD multi-layer coating provides superior heat resistance and wear protection for hard materials up to 65 HRC.
• Flute count: Up to 7 flutes (Fast Type design) for efficient chip evacuation and higher feed rates.
• Thread sizes: Metric threads M3, M4, and M5 with 0.5 mm pitch, designed for clean, accurate thread profiles.
• Material: Solid carbide construction delivers rigidity, thermal stability, and extended tool life in challenging materials.
• Performance: High edge stability and reduced chatter enable consistent thread quality and smooth finishing.

For machinists, this means reliable, repeatable threads even in hardened materials where other tools struggle. The 7-flute geometry and PVD coating work together to maintain cutting efficiency at higher speeds, while the MT3 shank ensures quick tool changes with minimal runout. Use cases include internal and external thread milling in hardened steel, nickel-based superalloys, and aerospace-grade components. Pair these thread mills with proper coolant and stable fixturing to maximize tool life and achieve precise, dimensionally consistent threads across production runs.