Carmex MT Line Internal Thread Mills are built for precise, efficient internal threading in UN-thread forms. Designed for machinists and shops that value dependable performance and cost-conscious tooling, these solid carbide mills deliver consistent thread quality in a single, streamlined workflow.

• Tool type: Internal thread milling tool designed to create precise internal threads in one operation.
• Material: Solid carbide for exceptional wear resistance, rigidity, and long tool life.
• Thread compatibility: Supports UN thread forms including UNC, UNF, UNEF, and UNS.
• Size and pitch: 1/4" diameter with 28 threads per inch (1/4-28) for common standard holes.
• Shank/interface: MT7 shank compatible with standard milling spindles and toolholders for solid rigidity.
• Flute count: 3–5 flutes engineered to optimize cutting action and chip evacuation for clean, stable threading.
• MT line focus: Purpose-built for efficient, cost-effective threading without compromising accuracy or finish.
• Applications: Ideal for producing tapped-like internal threads in metal parts, with reliable repeatability across production runs.

This internal thread mill is tailor-made for shops that demand dependable threading performance on a variety of materials. The multi-flute geometry supports smooth chip evacuation and consistent thread profiles, helping reduce cycle times and improve surface finish. With a robust solid carbide construction and MT7 compatibility, you can expect durable performance and stable operation in demanding machining environments.