Carmex Thread Mills Carbide Mini Type - UN (UNC UNF UNEF UNS) - No. 4 x 40 - MT7 - Long - 6.3mm Reach

The Carmex Carbide Mini-Type Thread Mill is a compact, high-precision tool designed for CNC threading across UN family thread forms (UNC, UNF, UNEF, UNS). With a long reach and versatile geometry, it excels at deep-hole threading in hard materials, delivering reliable internal and external threads in a single tool.

• Thread form compatibility: Ready to work with UN, UNC, UNF, UNEF, and UNS thread forms, covering a broad range of applications.
• Carbide MT7 sub-micron grade: Sub-micron carbide core with a Titanium Aluminum Nitride multi-layer coating (ISO K10–K20) for outstanding wear resistance.
• Triple-coated for extended tool life: Specialized triple coating enhances durability in demanding materials and high-speed milling environments.
• Long reach and geometry: No. 4 × 40 size with a 6.3 mm reach and MT7 shank for compatibility with common CNC setups.
• Through-coolant and deep-hole capability: Coolant flows through the flutes to the cutting edge, improving cooling and chip evacuation in deep holes.
• Spiral flute design: Spiral flutes deliver a smooth cutting action and stable performance across feeds and speeds.
• Multi-flute efficiency: 3–5 flutes shorten machining time by increasing material removal per pass without sacrificing finish.
• High-speed, hardened-material performance: Optimized for medium to high cutting speeds and capable of machining hardened materials up to 45 HRc.
• Versatile thread production: The same tool can produce a wide range of thread pitches and both external and internal threads, simplifying setups and inventory.

With this thread mill, you gain the flexibility to thread in tight, deep locations and across multiple pitches using a single tool. The through-coolant design minimizes heat and extends tool life, while the short profile reduces cutting forces and the risk of breakage. Ideal for aerospace, automotive, moldmaking, and precision engineering, it delivers consistent thread quality, faster cycles, and fewer tool changes—empowering smoother workflows and reliable results.