Ingersoll Cutting Tools 2946123 Thread Mill 3/8 in

Product Description

The INGERSOLL CUTTING TOOLS 2946123 is a solid carbide helical flute thread mill designed for cutting 3/8-inch UN threads in a single helical pass. Built to series MTECS-UN specifications and coated with TiAlN for heat and wear resistance, this tool handles demanding thread milling operations where tap breakage or blind-hole access is a concern. The long-reach configuration provides clearance for deeper threaded holes without sacrificing rigidity. With a 3-flute, right-hand flute design and 16 teeth per inch, it delivers consistent thread form in ferrous and non-ferrous materials. Material grade IN2005 carbide substrate supports the coating for extended tool life in production and job-shop environments.

This thread mill is suited for CNC machining centers in both residential shop and industrial production settings. It is used wherever a 3/8-inch UN internal thread is required and tapping is impractical - such as blind holes, interrupted cuts, or when a single tool must cover multiple thread sizes via CNC offset. The long-reach design makes it appropriate for workpieces with significant wall depth or fixture interference. A licensed machinist or CNC programmer sets up and operates this tooling under standard G-code thread milling routines.

Key Features

• Solid carbide construction in material grade IN2005 for rigidity and heat resistance
• TiAlN coating extends tool life in high-temperature cutting applications
• Long-reach thread mill type provides clearance for deep or obstructed hole locations
• 3-flute, right-hand helical geometry promotes chip evacuation and smooth thread form
• 16 teeth per inch matches 3/8-inch UN thread standard requirements
• Straight-cylindrical shank for direct collet or end mill holder mounting

Compatibility

Designed as an OEM-style thread milling tool for CNC machining centers capable of helical interpolation, compatible with 3/8-inch UN thread form applications per the MTECS-UN series specification.

Installation Notes

Thread mills of this type are installed by qualified machinists or CNC programmers into collet chucks or end mill holders sized for the 0.3125-inch shank diameter. The machine spindle must be stopped and the tool path programmed for helical interpolation before running. Verify runout with a dial indicator after tool installation to ensure thread accuracy. Do not use in conventional drilling or tapping modes - helical interpolation CNC programming is required.