Carmex 12I24UNMT7 Carbide Thread Mill Insert 24 Tpi

Product Description

The CARMEX 12I24UNMT7 is a carbide thread mill insert designed for internal threading operations on UN-profile threads at 24 threads per inch (TPI). Finished with a TiAlN (titanium aluminum nitride) coating, the insert offers improved heat resistance and wear life compared to uncoated carbide, making it well-suited for demanding thread milling cycles. This is an indexable insert intended for use in compatible thread mill toolholders and is typically installed by machinists and CNC programmers working in precision manufacturing, job shops, or toolroom environments.

This insert is used for internal UN thread milling applications where a full-profile, single-pass or helical interpolation threading strategy is required. It is suited for use on CNC machining centers performing thread milling in materials where TiAlN coating provides thermal and abrasion resistance. The 24 TPI specification targets finer unified national thread forms common in precision mechanical assemblies. A minimum order quantity of 5 units applies, with individual package quantity of 1.

Key Features

• TiAlN coating for enhanced heat resistance and extended tool life in demanding materials
• Internal thread profile - engineered for internal UN thread milling operations
• 24 TPI unified national (UN) thread form for fine-pitch thread applications
• Indexable carbide construction for consistent, repeatable thread geometry
• Minimum order quantity of 5 units per order

Compatibility

Designed as an OEM-style indexable insert replacement for compatible CARMEX thread mill toolholders accepting the MT7 insert designation in internal UN threading configurations.

Installation Notes

Installation of indexable thread mill inserts should be performed by a qualified machinist or CNC technician. Ensure the toolholder is fully removed from the spindle or the machine is powered down and locked out before seating or indexing the insert. Use the manufacturer-specified torx or hex key to secure the insert clamp screw - do not over-tighten by hand estimation alone; follow the toolholder manufacturer's clamping procedure. Inspect the insert pocket and seating surface for chips or debris before installation to ensure proper seating and thread accuracy.