Engineered for precision Whitworth thread milling, Carmex’s MTB solid carbide through-coolant tool delivers clean, accurate BSW/BSF threads with a durable MT7 taper. Designed for through-bore cooling, this cutter keeps chips moving and temperatures down, helping you achieve tight tolerances in demanding materials.

• Diameter and thread form: 1-1/8" nominal diameter with Whitworth BSW/BSF threads (9 TPI) for classic Whitworth applications.
• Shank and taper: MT7 Morse taper shank for secure, rigid mounting in compatible machine spindles.
• Through-coolant design: Bores coolant through the tool to improve chip evacuation and cooling at the cutting edge, enhancing stability and finish.
• Material: Solid carbide construction delivers high hardness, wear resistance, and stable performance in tough materials.
• Geometry and quality: Optimized flute and cutting geometry to produce smooth thread profiles and reliable results across multiple passes.

This through-coolant thread mill is ideal for manufacturing and repair scenarios involving Whitworth threads in housings, fittings, and mechanical assemblies. Use it to mill internal or external Whitworth threads with heightened control, better surface finishes, and longer tool life compared with traditional tapping—especially when working in alloys, hardened steels, or components where chip control is critical. The combination of MT7 compatibility, solid carbide rigidity, and coolant-through capability helps you reduce cycle times, improve process stability, and minimize tool changes in high-precision machining workflows.