Carmex 30I6UNMT7 Carbide Thread Mill Insert 6 Tpi

Product Description

The CARMEX 30I6UNMT7 is a carbide thread mill insert designed for internal thread milling operations in UN-standard thread profiles. Built from submicron carbide with a TiAlN finish, this insert delivers consistent thread form geometry at 6 teeth per inch (TPI). At 0.217 inches thick, it is engineered for dimensional stability under the lateral cutting forces typical of thread milling. Grade MT7 designates the coating and substrate combination suited for ferrous and non-ferrous materials across a range of machining applications. Machinists and CNC operators use this insert style in thread milling toolholders to produce internal UN threads without tapping.

This insert is used in CNC machining centers for cutting internal UN-standard threads per ANSI B1.1-1989. It is suited for production environments where thread milling is preferred over tapping, such as blind-hole applications or hard materials where tap breakage is a concern. The 30I insert style fits compatible thread mill bodies designed for that geometry. Typical applications include aerospace, automotive, and general metalworking shops running internal thread programs on vertical or horizontal machining centers.

Key Features

• Submicron carbide substrate for wear resistance and edge stability
• TiAlN finish for elevated heat resistance during dry or semi-dry cutting
• 6 TPI internal UN thread profile per ANSI B1.1-1989
• 30I insert style geometry for use in compatible thread mill bodies
• Grade MT7 coating for consistent performance across ferrous and non-ferrous materials
• Conical profile: No - straight thread form insert

Compatibility

Designed for use with thread mill toolholders accepting the 30I insert style for internal UN thread milling applications.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and the tool is secured in the toolholder before inserting or removing the insert. Seat the insert firmly against the pocket locating surfaces and torque the clamping screw to the toolholder manufacturer specification. Verify thread program offsets before cutting to protect both the insert and the workpiece.