Vargus 80302 Internal Thread Mill 3 Flute 20 Tpi Solid Carbide

Product Description

The VARGUS 80302 is a solid carbide internal helical flute thread mill designed for precision thread milling in metalworking and machining applications. With 3 right-hand flutes and a cutting diameter of 0.3620 inches, this tool produces UNEF and UNF internal threads at 20 teeth per inch (TPI). The 0.8750-inch length of cut and 2.8740-inch overall length make it well-suited for through and blind-hole threading operations. A bright, uncoated finish is standard, and the tool supports coolant-through delivery for chip evacuation and heat management during cutting. The 3/8-inch shank diameter fits standard collet and end mill holders.

This thread mill is intended for use in CNC machining centers performing internal thread milling on ferrous and non-ferrous materials. The helical flute geometry reduces cutting forces and improves thread quality compared to single-point or tap-based methods. With a minimum nominal diameter of 0.4375 inches, it is suited for threading holes at or above that diameter to UNEF and UNF standards. Machinists working in aerospace, industrial manufacturing, and precision job shop environments will find this tool appropriate for high-accuracy threading requirements.

Key Features

• Solid carbide construction for rigidity and wear resistance in precision threading
• 3 right-hand helical flutes for balanced cutting action and chip flow
• Coolant-through design supports internal coolant delivery for chip evacuation
• Compatible with UNEF and UNF thread standards at 20 TPI
• Bright, uncoated finish suitable for a range of common workpiece materials
• 3/8-inch shank diameter fits standard CNC toolholders and collet chucks

Compatibility

Designed for internal thread milling of UNEF and UNF threads with a minimum nominal diameter of 0.4375 inches. Fits standard 3/8-inch collet holders and end mill toolholding systems used on CNC machining centers.

Installation Notes

Installation and use should be performed by qualified machinists on CNC equipment programmed for helical thread milling toolpaths. Ensure the toolholder is properly torqued and the shank is fully seated before operation. Verify spindle speed, feed rate, and coolant flow settings are appropriate for the workpiece material before cutting. Do not use this tool for tapping operations or in manual drill press applications.