Carmex FSH Solid Carbide Thread Mills are fast-type internal-threading tools designed for hard materials. Built for professionals who demand precision and durability, these MT3-coated mills deliver reliable, high-quality threads in demanding substrates.

• Material: Solid carbide core with MT3 ultra-fine grade for exceptional rigidity and edge retention in hard materials (up to 65 HRC).
• Coating: PVD multi-layer coating for superior wear and heat resistance, extending tool life in tough alloys.
• Flute count: Up to 7 flutes on select models to improve chip evacuation and stability when threading hard workpieces.
• Fast Type design: Optimized geometry for fast, clean threading and efficient material removal.
• Thread sizes: Metric threads M6 x 1 and M8 x 1, compatible with common CNC programs.
• Construction: Precision-ground flute geometry and robust shank for dependable performance in demanding applications.

This tool enables precise internal threading in hardened steels, superalloys, and other hard materials without frequent tool changes. The MT3 coating and multi-flute design promote stable cutting, reduced heat buildup, and consistent thread quality, making it well-suited for aerospace, automotive, and moldmaking contexts where hard substrates are routine.