Carmex MT7 Solid Carbide Internal Thread Mills are engineered for precise, efficient internal threading in UN forms (UNC, UNF, UNEF, UNS). Designed for professional machinists and job shops, this tool delivers reliable 1/4"-28 threads with a focus on performance and value.

• Tool type: Solid carbide internal thread mill designed specifically for milling internal threads rather than tapping.
• Thread forms: Compatible with UN threading standards—UNC, UNF, UNEF, and UNS—covering common metric and imperial configurations.
• Thread size: Internal 1/4"-28 thread capability, ideal for common fastener specifications in small to medium holes.
• Shank: MT7 (Morse Taper 7) shank for secure seating in compatible spindles andTooling systems.
• Flute configuration: 3–5 flutes designed to optimize chip evacuation, rigidity, and thread quality during deep or blind-hole milling.
• Material: Premium solid carbide construction for stiffness, heat resistance, and long-term cutting performance in a variety of metals.
• Geometry and efficiency: Optimized threading geometry minimizes cutting forces and improves finish while reducing cycle times.

Whether upgrading from tapping or preparing for high-volume production, these thread mills provide a dependable internal threading solution. The combination of a robust carbide core, multi-flute design, and MT7 shank delivers consistent thread profiles, better surface finish, and repeatable results across applications that require UNC/UNF/UNEF/UNS threads at 1/4-28. This makes the Carmex MT7 internal thread mills well-suited for machine shops, manufacturing cells, and repair operations that demand precise, economical threading without compromising reliability.