Engineered for precision internal threading, the Carmex MTB solid carbide thread mill with through-coolant delivers reliable Whitworth BSW/BSF performance in a compact 5/16 x 18 size with MT7 shank. Built for machinists who value clean threads, extended tool life, and efficient chip control, it represents a practical upgrade for productive workshop threading.

• Through-Coolant Bore: Delivers coolant directly to the cutting edges, improving chip evacuation and helping maintain stable cutting temperatures.
• Solid Carbide Construction: Provides rigidity and wear resistance for consistent thread forms and longer tool life under demanding milling conditions.
• Whitworth Thread Forms: Precisely engineered for BSW and BSF standard threads, ensuring accurate engagement and reliable fit.
• 5/16 x 18 Size with MT7 Shank: Compatible with common MT7 tool holders, delivering solid rigidity and repeatable performance in a range of machines.
• Internal Thread Milling Capability: Specifically designed to create clean, accurate internal threads in metal parts with a single setup, reducing secondary operations.
• MTB Line Innovation: Builds on Carmex MT technology by integrating through-bore cooling to enhance lifespan and reduce downtime in high-production environments.

By enabling coolant to reach the cutting zone and actively flushing chips away, this thread mill helps you achieve consistent thread quality, tighter tolerances, and longer tool life. It’s an efficient, dependable choice for manufacturing threads in Whitworth standards, ideal for fasteners, housings, and components where robust internal threads are critical.