The Carmex Carbide Threading Insert – ACME (model 30I4ACME) is a TiAlN-coated carbide insert designed for precise ACME threading and a wide range of common profiles. Built for professional shops, it combines durability, versatility, and a compact design to handle various thread pitches with five available lengths.

• TiAlN coating: Enhances wear resistance and heat tolerance, extending tool life in demanding threading applications.
• ACME threading insert: Specifically suited for ACME profiles, while remaining compatible with many other common thread forms.
• Double-edged design: Two cutting edges per insert maximize usable life (except for BSPT / NPT / NPTF / American Buttress / API RD).
• Five available lengths: Options spanning from 12 mm to 40 mm to fit different setups and workpiece sizes.
• Wide pitch range: Supports pitches from 0.5 mm (32 TPI) to 6.0 mm (4 TPI) for broad threading capability.
• Internal/External applicability: For many profiles, the same insert can machine both internal and external threads; note exceptions include ISO / UN / NPSM / UNJ / Acme.
• Material: Carbide construction provides rigidity and consistent cutting performance.

This insert delivers reliable, precise threading results with minimal tool changes thanks to its dual-cutting edges and robust TiAlN coating. The combination of broad pitch support and multiple length options helps you optimize setup for finish quality, production efficiency, and extended tool life—whether you’re producing standard ACME parts or tackling a variety of threaded profiles in a busy workshop.