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The VARGUS 80501 is a carbide thread mill insert engineered for internal UN thread milling applications. Finished with a TiCN coating applied via PVD process, this insert delivers hard, wear-resistant cutting performance on steel and ferrous workpiece materials. Designated insert style R25I with size code 25 and manufacturer grade VBX, it is built to ANSI B1.1:74 standards and cuts at 12 threads per inch. Machinists and CNC operators in production and job shop environments rely on this insert for consistent thread form accuracy in internal bores where tap breakage or thread quality is a concern.
This insert is suited for internal UN thread milling on steel and comparable primary workpiece materials coded P under the ISO material classification system. Typical applications include threading operations on machining centers equipped with thread milling cycles. The 12 TPI pitch targets coarse-series fastener threads common in general industrial and structural assemblies. At 0.025 pounds, the insert ships individually and is intended as a direct replacement or replenishment unit within compatible VARGUS thread mill tooling systems.
Designed for use with VARGUS thread mill toolholders accepting R25I style inserts. Verify toolholder insert seat geometry and clamping style before installation. No additional model-specific compatibility data was provided by the manufacturer for this listing.
Thread mill inserts are installed and changed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before any insert change. Use the correct torque wrench and clamping screw specified by the toolholder manufacturer - do not overtighten, as carbide inserts are brittle and can fracture under uneven clamping load. Confirm insert seating and edge orientation before resuming cutting operations.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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