Carmex’s MTSB Mini Type through-coolant thread mills are precision solid-cartridge cutters designed for reliable, clean threading in pre-drilled holes across UNC, UNF, UNEF, and UNS forms. Built for professionals who demand consistent thread quality in confined spaces, these cutters deliver steady performance from the first pass to the last.

• Through-coolant bore: High-pressure coolant is delivered through the tool into the pre-hole and threading zone, washing chips away during the threading circle and cooling the cutting edge.
• Solid carbide construction: Rigid, wear-resistant material that maintains geometry and accuracy under demanding threading operations.
• Thread forms supported: Compatible with UNC, UNF, UNEF, and UNS threads; No. 10 diameter with 32 TPI (No. 10 x 32) for versatile small-thread work.
• Mini/MTSB type profile: Compact geometry optimized for tight pockets and small-diameter threads without sacrificing rigidity.
• MT7 shank: Standard MT7 interface for secure, stable mounting on common milling machines and toolholders.
• Efficient chip evacuation: Internal cooling and bore design help flush chips during rotation, reducing risk of chip jam and re-cutting.

This through-coolant design translates to lower cutting temperatures, improved surface finish on internal threads, and longer tool life by minimizing wear at the cutting edge. The combination of a precise mini profile with a robust MT7 shank makes it well-suited for automotive, aerospace, and general manufacturing applications where small, accurate threaded holes are essential. When using these cutters, maintain appropriate coolant pressure, select cutting speeds that suit carbide tooling, and ensure the pre-hole diameter aligns with the No. 10 x 32 thread specification for optimal results.