Carmex FSH Thread Mills are high‑performance solid carbide tools designed for precise thread milling in hard materials. Built for professionals working with UNC/UNF/UNEQ/UNS thread forms, these No. 5 and No. 6 mills with an MT3 shank deliver reliable, consistent results in demanding applications.

• Thread sizes: No. 5 and No. 6 in UNC/UNF/UNEQ/UNS standards for versatile fastener compatibility
• Shank: MT3 solid carbide for rigid mounting and accurate toolholding
• Flute count: Up to 7 flutes to enhance load distribution and chip evacuation in tough materials
• Coating: Ultra‑fine MT3 grade with a multi‑layer PVD coating for heat and wear resistance
• Material suitability: Optimized for hard materials up to 65 HRC and demanding superalloys
• Cutting geometry: Fast type design that improves material removal and thread formation efficiency

These thread mills pair a multi‑flute arrangement with a robust coating to maintain cutting stability, even under higher speeds and heavier feeds common when working with hardened steels, nickel alloys, and titanium. The result is cleaner thread profiles, tighter tolerances, and extended tool life in challenging machining environments. Ideal for aerospace, automotive, mold making, and precision mechanical components, the Carmex No. 5 and No. 6 MT3 thread mills help you complete difficult threaded features with fewer passes and less rework.