Vargus 64739 Carbide Thread Mill Insert 8 Tpi

Product Description

The VARGUS 64739 is a carbide thread mill insert designed for internal thread milling operations on UN unified thread forms. Manufactured in grade VK2 and left uncoated, this insert suits applications where base carbide substrate performance is preferred without an additional coating layer. The insert style is 5I with a size code of 5, and it is rated for 8 threads per inch (TPI). Thread mill inserts like this one are installed into compatible thread mill toolholders and used on CNC machining centers to generate internal threads in a helical interpolation path. The VK2 grade carbide provides consistent cutting performance across a range of workpiece materials.

This insert is intended for internal thread milling of UN unified inch thread forms at 8 TPI. It is suited for use on CNC machining centers and mill-turn equipment in job shop, production machining, and toolroom environments. The uncoated VK2 carbide construction makes it a practical choice when coating-related edge prep changes are not desirable or when regrinding and re-use of the substrate is part of the workflow. Licensed machinists and CNC programmers typically specify this insert for threading cycles in ferrous and non-ferrous workpiece materials.

Key Features

• VK2 carbide grade provides a consistent, reliable cutting edge for internal thread milling
• 8 TPI rating conforms to ANSI B1.1:74 unified inch thread standards
• Uncoated substrate allows direct carbide-to-workpiece contact without PVD layer interference
• Insert style 5I and size code 5 for use in compatible VARGUS thread mill bodies
• Internal thread application geometry optimized for helical interpolation cycles

Compatibility

Designed as an OEM-style replacement insert for compatible VARGUS thread mill toolholders accepting the 5I insert style in size code 5 for internal UN thread milling at 8 TPI.

Installation Notes

Thread mill inserts should be installed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before changing or seating any insert. Use the appropriate VARGUS torx or hex key specified for the toolholder to avoid stripping the clamping screw. Verify insert seating and runout before initiating a thread milling cycle.