Carmex B0375C0813UN Thread Mill 1/2-13 Internal Carbide

Product Description

The CARMEX B0375C0813UN is a helical flute thread mill designed for cutting internal 1/2-13 UNC threads in a single helical interpolation pass. Built from solid carbide in material grade MT7 and finished with a TiAlN coating, this tool delivers thermal resistance and extended tool life in demanding machining environments. It runs 3 right-hand flutes at 13 teeth per inch, with a cutting diameter of 0.362 inches and a length of cut of 0.89 inches. Coolant-through construction supports chip evacuation and heat management at the cutting zone. Machinists and CNC programmers working in production and job-shop environments rely on thread mills like this one when threading blind holes or exotic materials where tap breakage is a concern.

This thread mill is suited for machining centers performing internal thread milling operations in ferrous and non-ferrous materials. The 3/8-inch shank fits standard collet chucks and toolholders common in vertical and horizontal machining centers. With a 3.00-inch overall length and 2.11-inch shank length, the tool provides reach for moderate-depth applications without sacrificing rigidity. It is appropriate for shops producing threaded features in aluminum, steel, stainless, and similar materials where the 1/2-13 UNC thread form is specified.

Key Features

• Solid carbide construction in material grade MT7 for hardness and wear resistance
• TiAlN coating extends tool life and supports dry or near-dry cutting applications
• 3 right-hand helical flutes for efficient chip flow during thread interpolation
• Coolant-through design aids chip evacuation and thermal control at the cut
• Cuts 1/2-13 UNC internal threads with a 0.362-inch cutting diameter and 0.89-inch length of cut
• 3/8-inch shank diameter fits standard collet and milling toolholders

Compatibility

Designed for internal 1/2-13 UNC thread milling operations on CNC machining centers equipped with helical interpolation capability and toolholders accepting a 3/8-inch shank diameter.

Installation Notes

Thread mills are installed and operated by qualified CNC machinists familiar with helical interpolation programming. Secure the shank in a properly sized collet or end mill holder and verify runout before cutting. Program the toolpath using the correct thread mill interpolation cycle for the 1/2-13 UNC pitch and confirm spindle direction matches the right-hand flute geometry. Always verify workpiece fixturing rigidity and coolant delivery before initiating the threading pass.