The Carmex Carbide Threading Insert for NPS (TiAlN coated, model 21-14NPS) is a versatile cutting solution designed for professional machinists who tackle a wide range of threading tasks. Built to cover all common thread profiles, it delivers reliable performance across internal and external applications.

• Coating: TiAlN-coated carbide for improved heat resistance and extended edge life in demanding threading operations.
• Coverage: A single insert family that supports all common thread profiles, reducing the need to switch between multiple inserts.
• Edge Count: Double-sided cutting edges provide two usable edges per insert (except for BSPT/NPT/NPTF/American Buttress/API RD profiles), maximizing tool life.
• Length Options: Five lengths ranging from 12 mm to 40 mm to suit different component sizes and machine setups.
• Pitch Range: Depending on length, handles pitches from 0.5 mm (32 TPI) to 6.0 mm (4 TPI), covering a broad spectrum of industrial threading needs.
• Internal/External Capability: For many thread profiles, the same insert machines both internal and external threads (note: some profiles are exceptions).
• Material: Robust carbide construction designed for precision threading and long-term wear resistance.
• Application Scope: Ideal for automotive, hydraulic, plumbing, and general manufacturing tasks requiring accurate, repeatable threads.

This threading insert is crafted to streamline production workflows: fewer tool changes, consistent thread quality, and the flexibility to tackle a variety of profiles with confidence. The TiAlN coating helps maintain sharpness under higher-speed operations, while the double-edged design reduces downtime by offering multiple usable edges from a single insert. Whether you’re finishing a 0.5 mm pitch on a compact component or cutting a 6.0 mm pitch on a larger part, this Carmex insert is a dependable choice for precise, repeatable results.