Vargus 64186 Carbide Thread Mill Insert 16 Tpi Un

Product Description

The VARGUS 64186 is a carbide thread mill insert designed for internal UN threading operations at 16 teeth per inch (TPI). Built from micrograin carbide with a PVD-applied TiCN coating, this insert delivers consistent thread form in non-ferrous metals, superalloys, and titanium. The 2I insert style features a 1/4-inch (6.35 mm) inscribed circle and carries the VBX manufacturer grade designation. It is a direct replacement-style insert intended for use in compatible VARGUS thread milling toolholders. Installation is performed by machinists and CNC tooling specialists working with precision threading applications.

This insert is suited for internal thread milling in materials classified under workpiece material code N, which covers non-ferrous metals, superalloys, and titanium. It conforms to ANSI B1.1:74 standards for UN thread form and is appropriate for production environments where repeatable thread quality is required. The 16 TPI pitch makes it applicable to a range of standard UN fastener thread sizes. This insert ships individually (package quantity of 1) and must be ordered in multiples of 5.

Key Features

• Micrograin carbide substrate for improved edge retention in difficult materials
• PVD TiCN coating reduces friction and extends tool life in non-ferrous and superalloy applications
• Internal UN thread form at 16 TPI, conforming to ANSI B1.1:74
• 1/4-inch (6.35 mm) inscribed circle, insert size code 2, style 2I
• VBX manufacturer grade designation for thread milling insert series
• Rated for non-ferrous metals, superalloys, and titanium (workpiece material code N)

Compatibility

Designed as a replacement-style thread mill insert for compatible VARGUS thread milling toolholders accepting 2I-style inserts with a 1/4-inch inscribed circle. No additional specific compatible model numbers were provided in the product data.

Installation Notes

Installation of thread mill inserts should be performed by qualified machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and the toolholder is secured before seating or replacing inserts. Use the appropriate torx or hex key as specified by the toolholder manufacturer to achieve proper clamping force - do not overtighten. Verify thread form and pitch against ANSI B1.1:74 tolerances before running production parts.