Carmex Thread Mills Solid Carbide - With Through Coolant - UNJ (UNJC UNJF UNJEF UNJS) - 1/4 x 28 - MT7

Precision thread milling cutter engineered for engineers and machinists who demand consistent UNJ threads and extended tool life. The Carmex Thread Mills Solid Carbide with Through Coolant delivers dependable performance in tight-tolerance threading tasks.

• Through-Coolant Bore: Delivers coolant directly through the bore to improve chip evacuation and cooling during thread milling, helping maintain thread quality and reduce dwell heat.
• Solid Carbide Construction: Rigid, high-strength carbide body for stability at higher speeds and longer tool life in demanding materials.
• MT7 Shank: Standard MT7 shank for secure, rigid tool retention and compatibility with large-diameter, high-torque milling spindles.
• 1/4" Diameter x 28 TPI: Precisely sized for common 1/4-28 UNJ thread applications, enabling accurate and repeatable threads in a single pass or light multiple passes.
• UNJ Thread Forms Compatibility: Designed to machine UNJ series threads with UNJC, UNJF, UNJEF, and UNJS specifications, covering a broad range of fastener and component standards.
• MTB Line Innovation: Part of Carmex’s MTB line, combining through-coolant capability with advanced geometry to optimize chip control and tool life in threaded milling operations.

This tool is ideal for applications like precision fastener production, threaded inserts, and repair work where clean thread profiles, consistent engagement, and long cutter life are critical. The through-coolant design reduces heat build-up, minimizes built-up edge, and enhances surface finish on internal threads, while the solid carbide body provides stiffness and reliability at machining speeds typical for UNJ threading. Use cases span versatile metals and alloys, delivering predictable results across the life of the tool.