Meet the Carmex carbide thread mill with through-coolant flutes—designed for through-hole threading and MT7 compatibility. It delivers coolant directly to the cutting edge for smoother, more efficient cuts.

• Through-coolant channels in flutes: coolant is guided through the flute structure to the cutting edge, enhancing cooling and chip control during threading.
• Solid carbide construction: robust, wear-resistant material provides high stiffness for precise, repeatable threads even in tougher materials.
• MT7 shank: standard MT7 interface ensures secure, stable clamping in a wide range of CNC toolholders.
• Thread form supported: precise 5/16" diameter with 18 threads per inch (5/16 x 18 UNC) and compatibility with UNC, UNF, UNEF, and UNS profiles.
• Flute design for direct chip removal: optimized flute geometry facilitates efficient chip evacuation in through-hole applications.
• Through-hole threading capability: specifically engineered for threading operations in through holes, enabling direct, uninterrupted chip flow.
• Coolant-friendly without external systems: effective threading even on machines without an external flood coolant setup, thanks to integrated through-flute coolant delivery.

This tool delivers tangible benefits in real-world machining: tighter thread tolerances, cleaner thread surfaces, and reduced tool wear thanks to effective cooling and superior chip management. Its through-coolant design minimizes heat buildup at the cutting edge, helping maintain dimensional accuracy and prolonging tool life. The MT7 shank provides dependable fitment on common CNC rigs, making it a versatile choice for precision threading in automotive, aerospace, and general manufacturing where through-hole UNC/UNF/UNEF/UNS threads are required.