Vargus 64789 Carbide Thread Mill Insert 16 Tpi Un Internal

Product Description

The VARGUS 64789 is a carbide thread mill insert designed for internal UN thread milling applications at 16 teeth per inch. Manufactured in the VK2 micrograin carbide grade, this uncoated insert is engineered for thread milling in superalloy and titanium workpiece materials, where edge integrity and thermal stability are critical. The 6I insert style features a 0.236-inch inscribed circle and conforms to the Standard TM series geometry. It is installed by machinists and CNC programmers running thread mill cycles on machining centers in precision manufacturing environments.

This insert is suited for internal UN thread milling in materials classified under ISO N - primarily superalloys and titanium. The uncoated micrograin carbide substrate performs well in applications where coated inserts may experience adhesion or edge buildup. Thread mill inserts of this type are used in aerospace, medical device, and defense manufacturing where UN thread standards per ANSI B1.1:74 are required. Each package contains one insert; the minimum order quantity is 10 units.

Key Features

• VK2 micrograin carbide grade for superior edge sharpness and wear resistance in difficult-to-machine materials
• Uncoated substrate reduces built-up edge when milling titanium and superalloys
• Internal thread configuration at 16 TPI for UN standard threads per ANSI B1.1:74
• 0.236-inch inscribed circle fits Standard TM series thread mill holders
• 6I insert style for consistent, repeatable seating in compatible toolholders
• PVD-capable grade suitable for both uncoated and PVD-coated application scenarios

Compatibility

Designed for use in VARGUS Standard TM series thread mill toolholders accepting the 6I insert style with a 0.236-inch inscribed circle. Intended for internal UN thread milling applications conforming to ANSI B1.1:74.

Installation Notes

Thread mill inserts are seated and clamped by trained machinists or tooling technicians; always power down and lock out the spindle before changing inserts. Verify insert seating and clamp torque per the toolholder manufacturer specifications before running a thread mill cycle. Inspect the insert pocket for chips or debris before installation to ensure proper seating and avoid edge fracture.