The Carmex Carbide Threading Insert for ACME and standard thread profiles delivers reliable, versatile threading performance in a compact, durable package. Designed for machinists who value precision and efficiency, it pairs a TiAlN coating with a robust carbide body to tackle a wide range of threading tasks.

• Threading range: Covers all common thread profiles with inserts available in five lengths (12 mm to 40 mm) to suit different tool holders and applications, handling pitches from 0.5 mm (32 TPI) up to 6.0 mm (4 TPI).
• Double‑edged design: Each insert features two cutting edges to extend life and reduce downtime. Note: BSPT / NPT / NPTF / American Buttress / API RD profiles are exceptions.
• Internal & external capability: For many thread profiles, the same insert can machine both internal and external threads, increasing versatility in a single tooling family ( 일부 profiles such as ISO / UN / NPSM / UNJ / Acme are exceptions).
• TiAlN coating: Titanium aluminum nitride coating enhances wear resistance and helps maintain cutting performance at higher speeds and temperatures.
• Carbide substrate: High‑rigidity carbide body provides precise thread geometry, improved surface finish, and stable performance across materials.
• Model identifier: 21I8ACME for easy reference and stocking within your threading insert lineup.

Whether you’re crafting precise ACME screws or navigating a broad spectrum of thread forms, this insert set reduces tool changes, extends edge life, and delivers consistent, clean threads. Its combination of multiple lengths, dual cutting edges, and a heat‑resistant TiAlN coating makes it a practical, long‑lasting choice for challenging threading projects in metalworking and fabrication environments.