The Carmex MTB Thread Mills are precision solid carbide tools designed for high-accuracy internal threading, built for engineers and machinists who demand clean, repeatable UNJ threads in metal parts. This through-coolant variant with an MT7 shank delivers reliable performance in challenging machining environments, making it ideal for shop floors that value efficiency and consistency.

• Through-Coolant Bore: Delivers coolant directly through the tool to the cutting edges, promoting efficient chip evacuation and reducing thermal load during thread milling.
• Solid Carbide Construction: Rigid carbide body provides strong wear resistance and superior dimensional stability for repeatable, accurate thread geometry.
• UNJ Thread Form Compatibility: Engineered to cut UNJ profiles (including UNJC, UNJF, UNJEF, UNJS) with a precise internal thread in a single pass.
• MT7 Shank: Morse Taper MT7 shank for secure retention in compatible holders and machines, ensuring dependable alignment during high-precision milling.
• Size and Pitch: 3/8 in diameter with 16 threads per inch (3/8 x 16 UNJ), a common and versatile size for a wide range of fastener applications.
• Optimized Cutting Geometry: Flute design and geometry are tuned for smooth chip control and stable threading, helping to minimize burrs and improve surface finish in through-hole work.

Whether you’re threading through steel, aluminum alloys, or other common engineering materials, this through-coolant thread mill supports efficient chip removal and consistent thread quality. The combination of a through-bore coolant path, hardened carbide, and a MT7 shank makes it a practical choice for production cells and precision repair work where uptime and thread accuracy matter most.