The Carmex MTB Thread Mill combines the durability of solid carbide with through-bore coolant, delivering precise internal threads in through-holes. Designed for MT7 tooling and UNC/UNF/UNEF/UNS thread standards, it’s built for machinists who need reliable, repeatable results in demanding metalworking applications.

• Cutting Diameter: 7/16 in
• Thread Size Compatibility: 1/2-20 UNC/UNF/UNEF/UNS
• Shank Compatibility: MT7
• Material: Solid carbide for rigidity and wear resistance
• Through-Coolant: Coolant delivered through the bore to the cutting edges for effective chip evacuation and edge cooling
• Series: MTB line of thread milling tools, built on the MT platform

Through-coolant capability minimizes chip buildup inside the hole and reduces thermal stress on the tool, helping maintain thread accuracy and surface finish. The carbide construction provides long life under high-speed milling, enabling faster feeds and fewer tool changes. Ideal for through-hole threading in automotive, aerospace, and general precision manufacturing, this tool supports tighter tolerances and cleaner threads with fewer passes.