Carmex Carbide Threading Insert – Unified – TiAlN Coated (40I16UN) is a versatile, high-precision threading solution designed for machinists who require reliable coverage of common thread profiles in a single insert family. Built for unified thread applications, it combines multiple lengths, dual cutting edges, and a durable TiAlN coating to deliver consistent results across a range of materials and applications.

• Length options: Five lengths available, from 12 mm to 40 mm, to fit a variety of toolholders and reach requirements.
• Pitch range: Capable of handling pitches from 0.5 mm (32 TPI) up to 6.0 mm (4 TPI) for broad threading versatility.
• Double-sided design: Each insert provides two cutting edges (except for BSPT/NPT/NPTF/American Buttress/API RD profiles) to maximize usable life.
• Internal & external capability: In many profiles, the same insert can machine both internal and external threads, reducing tool changes (with exceptions for ISO/UN/NPSM/UNJ/Acme).
• TiAlN coating: TiAlN-coated carbide construction enhances wear resistance and heat tolerance for tougher materials and longer cutting life.

This threading insert family is ideal for shops that routinely produce threaded components—from fasteners to hydraulic fittings—where efficiency and repeatable thread quality matter. The two-edged design minimizes downtime by doubling the usable life per insert, while the coating and robust carbide substrate help sustain sharpness through demanding cuts. With broad coverage of common thread profiles and the ability to address both internal and external threads in many cases, you’ll experience smoother setup, fewer tool changes, and cleaner thread forms across a wide range of materials.