Vargus 64387 Carbide Thread Mill Insert External Un 12 Tpi

Product Description

The VARGUS 64387 is a carbide thread mill insert designed for external UN thread milling operations. Manufactured in style 3E with a VTX grade carbide substrate, this insert carries a TiAlN coating applied via PVD process, providing thermal resistance and wear life suited to productive thread milling cycles. It is engineered for 12 threads per inch (TPI) UN profiles, conforming to ANSI B1.1:74 standards. Machinists and CNC programmers in production and job shop environments install this insert into compatible thread mill toolholders to generate external unified national thread forms on a range of workpiece materials.

This insert is applicable to external thread milling on materials designated under workpiece material code N, which typically covers non-ferrous and similar material groups. It is suited for CNC machining centers where thread milling is preferred over tapping, particularly in applications demanding thread quality, blind-hole flexibility, or difficult-to-tap materials. At 12 TPI, it is sized for a range of common UN fastener thread pitches found in general industrial and mechanical assembly work.

Key Features

• Carbide substrate with VTX manufacturer grade for durability in thread milling applications
• TiAlN coating via PVD process for thermal protection and extended tool life
• External thread profile at 12 TPI conforming to ANSI B1.1:74 UN standard
• Insert style 3E, size code 3 for use with compatible thread mill bodies
• Designed for workpiece material code N applications
• Single insert per package, orderable in single-unit quantities

Compatibility

Designed as a replacement-style thread mill insert for use with compatible VARGUS or equivalent thread mill toolholders accepting the 3E insert style; verify toolholder specifications before ordering.

Installation Notes

Thread mill inserts are installed by qualified machinists or CNC tooling technicians. Ensure the machine spindle is stopped and the tool is fully secured in the toolholder before seating or removing inserts. Follow the toolholder manufacturer torque guidelines for the clamping screw. Inspect the insert seat and clamping surfaces for chips or debris before installation to ensure proper seating and thread accuracy.