Meet the Carmex Thread Mills Solid Carbide with Through Coolant — a high-precision internal threading solution engineered for Whitworth forms. Designed for MT7 spindles, this tool delivers reliable 1/4 x 20 threads with enhanced cooling directly through the bore for smoother, more consistent machining.

• Through coolant bore: Coolant is delivered through the tool bore to the cutting edge, improving chip evacuation and keeping the thread path clear.
• Solid carbide construction: Hardened carbide for excellent wear resistance and long tool life in demanding threading applications.
• Whitworth thread form: Specifically designed for Whitworth BSW/BSF threads to ensure accurate profile and pitch in 1/4 x 20 applications.
• Size and interface: 1/4" diameter with 20 TPI, mounted on MT7 shanks for compatibility with a wide range of CNC machines.
• Internal thread milling capability: Optimized geometry for clean, precise internal threads with reduced risk of chatter or burrs.

The MTB line’s through-coolant feature not only aids chip control but also cools the cutting zones, extending tool life and enabling more aggressive cutting strategies. This makes it a practical choice for production environments where consistent thread quality and reduced downtime matter. Whether you're working on fasteners, housings, or any component requiring accurate Whitworth threads, this Carmex thread mill offers dependable performance and integration with your MT7 tooling ecosystem.