The Carmex Carbide Threading Insert for NPSM is a versatile, TiAlN-coated cutting solution designed for machinists who need reliable threading across a wide range of profiles. Built to withstand demanding machining conditions, this insert family simplifies setup and extends tool life in both internal and external threading tasks.

• Wide thread profile coverage: A comprehensive collection that spans all common thread profiles, reducing the need for multiple inserts.
• Five length options: Available in lengths from 12 mm to 40 mm to suit different machine setups and depth-of-cut requirements.
• Pitch range versatility: Depending on length, capable of threading pitches from 0.5 mm (32 TPI) up to 6.0 mm (4 TPI).
• Double-sided cutting edges: Each insert provides two cutting edges for extended life (except for BSPT/NPT/NPTF/American Buttress/API RD standards).
• Internal and external threading compatibility: For many profiles, the same insert can machine both internal and external threads (excluding ISO, UN, NPSM, UNJ, and Acme).
• TiAlN-coated carbide: Coating enhances wear resistance and enables longer use in tougher materials and higher-speed applications.
• Precise identification: Part number 21E14NPSM ensures accurate selection and replacement within Carmex’s NPSM threading insert family.

These inserts are designed to streamline your threading operations: use a single, durable tool for a variety of profiles, reduce tool changes with the double-edged design, and maintain consistent thread quality across both internal and external applications. The TiAlN coating adds reliability in challenging materials, helping you achieve clean, accurate threads with fewer passes and less downtime.