Carmex Thread Mills Carbide Mini Type - UN (UNC UNF UNEF UNS) - No. 4 x 40 - MT7

Carmex Carbide Mini Type Thread Mills are precision tools designed for fast, accurate threading in tight spaces. Ideal for machinists who need reliable internal and external threads with deep-hole capability, this MT7 shank mill covers UNC, UNF, UNEF, and UNS standards in a compact No. 4 x 40 size.

• Threading capability: Produces both internal and external threads across UNC/UNF/UNEF/UNS standards with a single tool
• Carbide grade MT7 with TiAlN coating: Sub-micron cutting edge with a triple-layer TiAlN coating for enhanced wear resistance and longevity
• Coating and performance: ISO K10–K20 range suited for high-speed cutting on a wide material spectrum
• Coolant-through flutes: Efficient coolant delivery through the flutes for deep-hole threading and better heat management
• Spiral flute design: Provides smooth cutting action and effective chip evacuation
• Multi-flute construction (3–5 flutes): Shorter machining time and increased rigidity for consistent thread quality
• Deep-hole capability: Optimized geometry and coolant strategy enable threading in deep holes with fewer tool changes
• Hard material compatibility: Suitable for machining hardened materials up to 45 HRc, expanding application scope
• Low cutting forces: Short-profile design reduces torque and deflection, minimizing the risk of tap-related breakage

This tool delivers precise, repeatable threads with reduced cycle times and extended tool life, thanks to its advanced coating and compact geometry. Its versatility across thread sizes and pitches, combined with deep-hole efficiency, makes it a practical choice for high-demand milling environments where reliability and performance matter.