The Carmex Thread Mills Carbide Mini Type is a versatile threading tool designed for UNC/UNF/UNEF/UNS threads. With No. 4 x 40 size, MT7 carbide, and an 8 mm reach, it excels in deep-hole threading across many materials and applications.

• Thread compatibility: UN (UNC, UNF, UNEF, UNS) threads, usable for both internal and external threads.
• No. 4 x 40 size with 8 mm reach: Compact, long-reach geometry suitable for constrained deep-hole environments; MT7 shank for robust performance.
• Material and coating: Carbide MT7 sub-micron grade with TiAlN multi-layer coating (ISO K10–K20) for wear resistance and extended life.
• Cutting performance: Optimized for medium to high cutting speeds; general-purpose threading across materials; designed for high-speed operation.
• Flute design: Spiral flutes provide smooth cutting action; multi-flute configuration (3–5 flutes) reduces machining time; through-flute coolant enhances cooling and chip evacuation.
• Deep-hole capability: Through-coolant and short profile enable machining in deep holes with efficient chip removal and lower cutting forces.
• Durability: Special triple coating increases tool life, delivering longer service intervals in demanding materials.
• Hard-material compatibility: Capable of machining hardened materials up to 45 HRc, expanding the range of applications.
• Versatility: A single tool can produce a wide range of thread pitches and both internal and external threads, simplifying tooling requirements.

Benefits: This thread milling solution reduces cycle time and tool changes by covering multiple thread sizes with one tool, while maintaining precision and repeatability. The through-coolant design improves heat management and chip evacuation in deep-hole threads, yielding clean, accurate results in hardened alloys. Built for reliability, it helps prevent broken taps and supports high-speed threading across aerospace, automotive, and moldmaking projects.