Carmex 12I32UNMT7 Carbide Thread Mill Insert 32 Tpi

Product Description

The CARMEX 12I32UNMT7 is a carbide thread mill insert designed for internal threading operations on UN-standard threads at 32 teeth per inch. Built from submicron carbide in the MT7 grade, this insert delivers consistent thread quality in demanding machining environments. The TiAlN finish provides heat and wear resistance suited for high-speed milling applications. At 0.114 inches thick, the insert fits compact tooling systems used on CNC machining centers and multi-axis mills. Machinists and toolroom professionals working with unified national thread forms rely on this style for precision internal thread generation in a single helical pass.

This insert is intended for internal thread milling on UN-standard thread forms per ANSI B1.1-1989. It is well suited for production and job-shop environments where thread milling is preferred over tapping, particularly in difficult materials or blind-hole applications. The 12I insert style is used in thread mill bodies designed to accept that insert format. Typical applications include generating internal threads in ferrous and non-ferrous workpieces on CNC machining centers. This is a consumable insert that is replaced individually once cutting edges are worn.

Key Features

• Submicron carbide substrate for enhanced wear resistance and edge integrity
• MT7 manufacturer grade optimized for thread milling performance
• TiAlN coating provides thermal resistance during high-speed internal threading
• 32 TPI configuration for UN internal thread generation per ANSI B1.1-1989
• 0.114 inch insert thickness for compact thread mill tooling compatibility
• Conical geometry not applied - straight insert profile for standard thread milling bodies

Compatibility

Designed for use in thread mill bodies accepting the 12I insert style. Compatible with internal UN thread milling applications conforming to ANSI B1.1-1989. Verify insert pocket dimensions and clamping style against your thread mill body specifications before ordering.

Installation Notes

Thread mill inserts are installed and replaced by machinists or toolroom technicians on CNC machining centers. Power down and lock out the spindle before changing inserts. Use the appropriate torx or hex key specified by the thread mill body manufacturer to seat the insert securely without over-torquing the clamping screw. Confirm insert seating and runout before resuming thread milling operations.