Meet Carmex's Carbide Mini Thread Mills, engineered for UNJ threading (UNJC, UNJF, UNJEF, UNJS) in tight spaces. This compact, high-performance tool handles both internal and external UNJ threads with speed, precision, and durable coating.

• Thread form compatibility: Supports UNJ and related forms (UNJC, UNJF, UNJEF, UNJS) for versatile threading with a single tool.
• Size and geometry: Shank 5/16 in, cutting diameter 9/16 in, 18 TPI capability; short-profile design reduces cutting forces for stable operation.
• Material and coating: Sub-micron MT7 carbide with a TiAlN multi-layer coating (ISO K10–K20); triple-layer protection to extend tool life.
• Flute design: Spiral flutes with 3–5 cutting edges deliver smooth cutting action and efficient chip evacuation.
• Through-coolant: Coolant-through flutes enhance cooling and lubrication in deep-hole threading applications, improving bore quality.
• Performance at speed: Optimized for medium to high cutting speeds, enabling shorter machining times even when threading hardened materials up to 45 HRC.
• Versatility: One tool can produce a wide range of thread pitches and both external and internal threads, expanding its applicability.
• Reliability: Short profile and advanced coating reduce cutting forces and wear, lowering the risk of tool breakage in demanding jobs.

With the Carmex Mini Thread Mills, you gain a single, efficient solution for precise UNJ threading across a variety of materials and hole depths. The through-coolant and spiral-flute geometry deliver clean, consistent threads with excellent surface finish, even in deep or hard-to-reach bores. The MT7 substrate and TiAlN coating resist wear at high speeds, extending tool life and reducing downtime from tool changes. This makes it ideal for aerospace, automotive, and general machining environments where reliable, fast threading matters.