Precision, durability, and clean threading in a compact form—the Carmex Thread Mills Mini Type with Through Coolant is built for internal thread milling in pre-drilled holes, especially when UNC, UNF, UNEF, and UNS threads are required. Designed for CNC environments, this solid carbide cutter delivers reliable performance where space and tight tolerances matter.

• Tool Family: MTSB mini thread mill with an internal through-coolant bore, engineered to push coolant directly to the cutting edge for peak performance.
• Size & Shank: No. 4 x 40 with MT7 shank, suitable for small-diameter threading in confined spaces.
• Material: Solid carbide construction for exceptional hardness, heat resistance, and long tool life.
• Coolant System: Internal coolant bore enables high-pressure through-coolant delivery to an application pre-hole, improving chip evacuation during the threading circle.
• Threading Capability: Optimized for internal threads in UNC, UNF, UNEF, and UNS standards, giving precise engagement and finish.
• Chip Control: Efficient coolant flow and chip washout reduce chip buildup and stabilize cutting conditions.

The through-coolant design directly targets heat at the cutting edge, allowing higher feed rates and more stable threading in small-diameter holes. That means cleaner, more consistent threads, reduced cycle times, and less tool wear in demanding manufacturing environments. Ideal for aerospace, automotive, and precision engineering applications where reliable internal threading and a smooth surface finish are essential.