Ingersoll Cutting Tools 2946060 Thread Mill 1/4 Un

Product Description

The INGERSOLL CUTTING TOOLS 2946060 is a solid carbide helical flute thread mill designed for cutting unified national (UN) thread forms in a single helical interpolation pass. Built to the MTECS-UN series standard, this long-reach tool carries a TiAlN coating that extends tool life in ferrous and hardened materials. It runs a 0.1870-inch cutting diameter on a 0.2500-inch straight-cylindrical shank, with a 0.5500-inch length of cut and an overall length of 2.5000 inches. The three-flute, right-hand configuration suits CNC machining centers in job shop, production, and toolroom environments.

This thread mill is applied where tapped-hole flexibility or thread quality demands exceed what a standard tap can deliver. It is suited for blind holes, through holes, and interrupted-thread applications requiring a 1/4-inch UN thread at 20 teeth per inch. The long-reach geometry allows access to recessed features and deeper boss patterns common in fixture plates, manifold blocks, and structural weldments. Machinists and CNC programmers working in aerospace, general manufacturing, and precision machining typically specify this tool for multi-diameter thread-milling strategies on CNC vertical and horizontal machining centers.

Key Features

• Solid carbide construction in material grade IN2005 for rigidity and wear resistance
• TiAlN coating reduces heat buildup and extends tool life in ferrous materials
• Three helical flutes, right-hand cut, for smooth chip evacuation during thread interpolation
• Long-reach design with 1.9500-inch shank length provides access to recessed features
• Cuts 1/4-inch UN thread form at 20 teeth per inch in a single CNC interpolation pass
• Straight-cylindrical shank fits standard ER and hydraulic collet toolholders

Compatibility

Designed for use in CNC machining centers capable of helical interpolation. Fits standard straight-bore collet chucks and toolholders accepting a 0.2500-inch shank diameter. Intended for cutting UN-standard thread forms per input data; no specific machine model or replacement part number was provided.

Installation Notes

Thread mill installation and setup should be performed by a qualified CNC machinist or toolroom technician. Secure the shank in a balanced, properly torqued collet or toolholder before spindle operation. Program helical interpolation per the tool manufacturer's recommended cutter compensation and feed-per-tooth values for the workpiece material. Inspect runout at the cutting diameter before first use, as excessive runout accelerates flute wear and degrades thread quality.