Carmex delivers a compact, high-precision solid carbide thread milling cutter designed for through-coolant threading in pre-drilled holes. The MTSB Mini Type is tailored for No. 4-40 threads and MT7 shanks, offering reliable performance in tight, demanding machining scenarios.

• Tool Type: Miniature solid carbide thread milling cutter (MTSB family) with internal cooling bore for through-coolant operation.
• Material: Solid carbide for excellent wear resistance, stiffness, and long tool life in metalworking.
• Coolant System: Internal bore delivers high-pressure coolant through the tool into the pre-hole, actively washing away chips during the threading circle.
• Through-Coolant Capability: Coolant reaches the cutting edge, enhancing heat dissipation and maintaining dimensional stability.
• Thread Compatibility: Suitable for UN family threads, including UNC, UNF, UNEF, and UNS profiles.
• Thread Size: No. 4-40 threading capability for small-diameter, precision applications.
• Interface: MT7 shank compatible with a wide range of CNC mills and toolholders.
• Application: Ideal for creating clean, accurate internal threads in pre-drilled holes with efficient chip evacuation.

This through-coolant design reduces heat buildup at the cutting edge, improves surface finish, and supports higher feed rates by maintaining consistent chip clearance. It’s a practical choice for shops and manufacturers seeking repeatable No. 4-40 threads in tight tolerances, with the reliability of Carmex’s solid carbide performance and the convenience of through-coolant delivery.