Vargus 80494 Carbide Thread Mill Insert 18 Tpi Un

Product Description

The VARGUS 80494 is a carbide thread mill insert designed for internal UN threading operations at 18 threads per inch. Finished with a TiCN coating applied via PVD process, this insert delivers improved surface hardness and wear resistance compared to uncoated carbide. It carries the VBX manufacturer grade designation and conforms to ANSI B1.1:74 standards. The R25I insert style fits compatible thread milling toolholders in the 25 size range. Machinists and CNC operators working in job shops or production environments install this insert as a direct replacement when worn tooling needs to be swapped out during thread milling cycles.

This insert is suited for internal thread milling applications on UN-profile threads at 18 TPI. The primary workpiece material code M indicates suitability for milling operations on a range of metallic workpiece materials. It is used in CNC machining centers where thread milling is preferred over tapping for difficult materials, blind holes, or larger diameter threads. The single-piece packaging makes it a practical replacement-stock item for toolrooms and machine shops that maintain on-hand insert inventory.

Key Features

• Carbide substrate with VBX grade designation for thread milling durability
• TiCN coating via PVD process for improved wear resistance and surface hardness
• R25I insert style in size 25 for compatibility with matching thread mill bodies
• Internal UN thread profile at 18 TPI conforming to ANSI B1.1:74
• Designed for milling metallic workpiece materials (material code M)

Compatibility

Designed as a replacement insert for VARGUS R25I-style thread milling bodies accepting size 25 carbide inserts. Specific toolholder compatibility should be verified against the VARGUS R25I toolholder documentation before installation.

Installation Notes

Insert replacement should be performed by a qualified machinist or CNC toolroom technician. Disengage the machine spindle and follow lockout/tagout procedures before changing inserts. Use the correct torque wrench and insert screw specified by the toolholder manufacturer to avoid seat damage or insert fracture. Inspect the insert pocket and clamping screw for wear or damage before seating the new insert.