The Carmex SR0010K12C is a carbide shank threading insert holder designed for long overhang threading on CNC milling machines, supporting both external and internal carbide inserts. It’s built to deliver consistent performance in demanding production environments.

• Long-overhang carbide shank: Engineered for extended reach in threading jobs, providing stability and through-put on CNC mills.
• Internal coolant bore: Integrated coolant channel to keep the cutting area cool and help extend insert life.
• Maximum length: Overall holder length up to 270 mm (metric versions) / 10.5 inches (inch versions) for deep threading tasks.
• Carbide inserts compatibility: Designed to work with carbide external and internal threading inserts for versatile, single-tool setups.
• Rigid carbide construction: Built to resist deflection and maintain accuracy during high-speed threading operations.
• Operational guidance: When machining long overhangs, reduce cutting speed and feed rate by 20–40% (exact value depends on workpiece material, thread pitch, and overhang amount).
• Compatibility note: SR0390K12C cannot be used with conical inserts: 12-18 NPT / 12-18 NPTF / 12-19 BSPT.

These tools enable efficient threading on CNC mills via helical interpolation, offering higher cutting speeds with multi-tooth carbide inserts. They can help lower tooling costs by delivering a durable, reusable solution that’s cheaper than traditional taps and dies. With an internal coolant path and a long, stiff shank, you’ll achieve reliable thread quality on deep or extended reach projects. The SR0010K12C is an ideal choice for shops that need a single, versatile holder capable of handling both internal and external threading inserts with long reach.