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The CARMEX 16IR14ACMEP25C is a solid carbide laydown threading insert designed for internal Acme thread cutting at 14 threads per inch (TPI). Built to style 16IR, this insert features a physical vapor deposition (PVD) TiN coating that extends cutting edge life during threading operations in ferrous and non-ferrous materials. With an inscribed circle of 0.375 inches and a thickness of 0.146 inches, it fits standard 16IR toolholders used on CNC lathes and manual threading setups. Grade P25C provides a balance of toughness and wear resistance suited to medium-duty threading in steel and cast materials. Machinists and tooling specialists working with Acme-threaded components install this insert for precise, repeatable thread profiles.
This insert is intended for right-hand internal Acme thread applications in production and maintenance machining environments. Acme threads are common in power transmission components such as lead screws, vises, and linear actuators. The 16IR14ACMEP25C suits both production shops running CNC turning centers and skilled machinists performing manual lathe work where accurate Acme thread forms are required. It is sold individually with a minimum order quantity of 10 units per order.
Designed as an OEM-style replacement or direct-use threading insert for 16IR-style internal threading toolholders used in Acme thread cutting applications.
This insert is installed by a machinist or tooling technician into a compatible 16IR internal threading toolholder. The machine spindle must be powered down and the tool turret secured before changing inserts. Use the correct torque wrench and insert screw specified by the toolholder manufacturer to seat the insert properly. Verify thread form and pitch against part specifications before commencing production runs.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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