Carmex 14I28UNMT7 Carbide Thread Mill Insert 28 Tpi

Product Description

The CARMEX 14I28UNMT7 is a carbide thread mill insert designed for internal UN thread milling at 28 teeth per inch. Built from submicron carbide in manufacturer grade MT7 with a TiAlN finish, this insert delivers consistent thread geometry and wear resistance in demanding machining environments. At 0.122 inches thick, the 14I insert style fits thread milling toolholders configured for this insert size code. It is installed by machinists and CNC operators in production and job-shop settings where precise internal UN threading is required.

This insert is used for internal UN thread milling applications following ANSI B1.1-1989 standards. It suits CNC machining centers performing thread milling operations on ferrous and non-ferrous materials where a TiAlN-coated submicron carbide grade is appropriate. The conical geometry designation is non-conical, making it suited for straight-profile internal thread forms. It is a common choice for high-volume threading operations requiring repeatable insert performance across multiple parts.

Key Features

• Submicron carbide substrate in MT7 grade for wear resistance and edge stability
• TiAlN finish for improved heat and oxidation resistance during cutting
• 28 TPI internal UN thread form per ANSI B1.1-1989
• Non-conical insert geometry for straight internal thread profiles
• 0.122 inch insert thickness for precise toolholder seating
• Manufactured to CE, ISO 9001:2015, ISO 13485:2016, ISO 14001:2015, and ISO 45001 standards

Compatibility

Designed as an OEM-style replacement insert for thread milling toolholders accepting the 14I insert style with size code 14. Verify toolholder seat geometry and clamping configuration before installation.

Installation Notes

Thread mill inserts are installed and indexed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before changing or indexing inserts. Use the correct torque driver and clamp screw specified by the toolholder manufacturer to seat the insert properly. Inspect the toolholder pocket for chips or damage before seating a new insert.