The Carmex Carbide Threading Insert (NPT, TiAlN coated) is a versatile cutting solution designed for machinists who work with a wide range of thread profiles. Built for durability and precision, it’s ideal for producing reliable threads in internal and external applications, especially in NPT work.

• Material: Carbide inserts deliver stiffness, predictable cutting behavior, and long wear life under demanding threading conditions.
• Coating: TiAlN coating enhances hardness and thermal resistance, helping maintain sharpness at higher speeds and extending insert life.
• Thread profiles covered: A comprehensive collection that supports all common thread profiles, reducing the need to stock multiple insert types.
• Length options: Five available lengths, ranging from 12 mm to 40 mm, to suit different tools and applications.
• Pitch range: capable of handling pitches from 0.5 mm (32 TPI) to 6.0 mm (4 TPI), depending on the insert length.
• Edge design: Double-sided inserts with two cutting edges, maximizing usable life (note: some thread types are exceptions).
• Internal vs external: For many profiles, the same insert can machine both internal and external threads, reducing tool-change downtime (exceptions apply for ISO/UN/NPSM/UNJ/Acme).
• Specific application: Optimized for NPT threading tasks with a robust carbide base and TiAlN coating to sustain performance in pipe-thread work.

Designed to streamline threading workflows, this insert delivers consistent thread quality, reduces the need for frequent tool changes, and provides economical wear performance across a broad set of common pipe and metric thread profiles. Its dual cutting edges and coated carbide construction help you achieve accurate tolerances and repeatable results, even in challenging materials and higher-speed conditions.