Vargus 80542 Thread Mill 1/4-20 Internal 3 Flute Carbide

Product Description

The VARGUS 80542 is a helical flute thread mill designed for cutting internal 1/4-20 UN threads in a single helical interpolation pass. Built from micrograin solid carbide and coated with TiCN for improved wear resistance and tool life, this mill is suited for production and job-shop environments where thread quality and repeatability matter. It runs with a right-hand flute direction and features 3 flutes with 20 teeth per inch. The 3/16-inch shank diameter keeps the tool compact for tight-clearance applications. Licensed machinists and CNC programmers working with ferrous and non-ferrous materials will find this tool a reliable choice for precise internal threading.

This thread mill is used for internal threading operations on CNC machining centers capable of helical interpolation. It is appropriate for threading holes in materials such as steel, aluminum, stainless, and similar workpiece materials where solid carbide tooling is standard practice. The 1/2-inch length of cut accommodates a range of shallow to moderate thread depths for the 1/4-20 thread form. With an overall length of 2.52 inches, it fits standard tool holders used in vertical and horizontal machining centers.

Key Features

• Micrograin solid carbide construction for rigidity and wear resistance
• TiCN coating reduces friction and extends tool life in ferrous materials
• 3-flute helical design enables efficient chip evacuation during interpolation
• Right-hand flute direction compatible with standard CNC thread-milling cycles
• Cuts 1/4-20 UN internal threads with a 0.181-inch cutting diameter
• No coolant-through requirement simplifies setup on standard spindles

Compatibility

Designed for use on CNC machining centers capable of helical interpolation for internal 1/4-20 UN thread milling applications.

Installation Notes

This tool is installed and operated by machinists and CNC programmers on milling machines with helical interpolation capability. Confirm tool holder runout is within acceptable limits before use, as excessive runout will degrade thread quality and reduce tool life. Program the correct helical interpolation cycle for the 1/4-20 thread form and verify the cutting diameter offset in the controller. Handle solid carbide tooling carefully to avoid chipping the cutting edges during installation or storage.