Carmex Thread Mills Carbide Mini Type - UN (UNC UNF UNEF UNS) - 1/4 x 28 - MT7

The Carmex Thread Mills Carbide Mini Type is a compact, high-precision tool designed for UN threads (UNC, UNF, UNEF, UNS) in tight spaces. With a 1/4" size and 28 TPI thread form, this MT7 carbide mini thread mill handles both internal and external threads with exceptional stability, even at higher cutting speeds.

• Tool material: Carbide MT7 sub-micron grade with TiAlN multi-layer coating for durability and heat resistance
• Coating system: Titanium Aluminium Nitride multi-layer coating (ISO K10–K20) for extended tool life
• Through-coolant: Coolant through the flutes enables efficient chip evacuation and helps maintain tool life in deep-hole threading
• Flute design: Spiral flutes provide smooth cutting action and better chip control
• Number of flutes: 3–5 flutes to reduce machining time while preserving thread quality
• Profile: Short profile delivers lower cutting forces and reduces the risk of breakage in demanding operations
• Versatility: One tool can produce a wide range of UN threads and pitches, for both internal and external threading
• Depth capability: Optimized for deep-hole threading thanks to through-coolant and flute geometry
• Performance with hardened materials: Suitable for threading hardened workpieces up to 45 HRC

This mini thread mill is ideal for aerospace, automotive, hydraulic, and general precision machining where space is limited and reliable UN-threading is required. It enables deep-hole threading with high-speed machining, delivering consistent thread quality, reduced cycle times, and longer tool life thanks to advanced coating and a robust multi-flute design. Use it to replace multiple dedicated taps and achieve both internal and external threads with a single, adaptable tool.