The Carmex Thread Mills Solid Carbide with Through Coolant (MJ 8 x 1.25, MT7) is a high-precision threading tool designed for demanding internal thread milling tasks. Built for professional workshops and precision shops, it brings reliable carbide performance together with a revolutionary through-coolant bore for cleaner, cooler, and longer-lasting threading operations.

• Through-Coolant Bore: coolant is delivered through the tool bore to the cutting zone, enhancing chip evacuation and edge cooling for consistent threads.
• Solid Carbide Construction: premium carbide core delivers stiffness, wear resistance, and stable thread formation in challenging materials.
• 8 mm Diameter x 1.25 mm Pitch: precisely sized for standard metric internal threads, enabling accurate, repeatable thread milling in a single setup.
• MT7 Shank Interface: Morse Taper 7 mounting provides secure, rigid retention in compatible machines for minimal runout.
• MTB Line Innovation: evolved threading tools built to optimize through-coolant performance, extending tool life and reducing downtime in production environments.

With through-coolant threading, you gain cleaner hole fills, reduced chip adhesion, and a more consistent thread profile. The tool’s carbide composition supports durable performance across frequent production runs, helping maintain tight tolerances and high-quality thread finishes. Its precise geometry and through-coolant design enable efficient, reliable internal threading for M8 x 1.25 applications, making it a practical choice for precision engineering, automotive components, and modular tooling projects.