Carmex MT0625E1612UN Helical Flute Thread Mill Solid Carbide

Product Description

The CARMEX MT0625E1612UN is a solid carbide helical flute thread mill engineered for cutting internal UNF threads ranging from 1-12 to 1-1/2-12. Built to material grade MT7, this tool features a TiAlN coating that extends tool life in demanding machining environments. It carries 5 right-hand flutes, a cutting diameter of 0.625 inches, and a length of cut of 1.63 inches, with a 0.625-inch shank diameter and a 4-inch overall length. Machinists and CNC operators use this tool where a single tool must cover a range of larger-diameter internal thread profiles at 12 TPI.

This thread mill is suited for CNC machining centers performing internal thread milling operations on medium-to-large diameter bores. The helical flute geometry reduces cutting forces and chip load, making it appropriate for threading in materials where solid carbide and TiAlN coating provide a performance advantage over high-speed steel alternatives. The 2.4-inch shank length provides adequate reach for typical workpiece setups. No coolant-through capability is present, so flood or mist coolant applied externally is the standard approach for chip evacuation.

Key Features

• Solid carbide construction at material grade MT7 for rigidity and wear resistance
• TiAlN coating for elevated heat resistance and extended tool life
• 5 right-hand helical flutes for efficient chip evacuation
• Covers internal UNF thread range 1-12 to 1-1/2-12 with a single tool
• 0.625-inch cutting diameter with 1.63-inch length of cut
• 4-inch overall length with 2.4-inch shank length for stable tool holding

Compatibility

Designed for use on CNC machining centers capable of helical interpolation, for cutting internal UNF threads at 12 TPI in the 1-inch to 1-1/2-inch nominal diameter range.

Installation Notes

Thread mills require a CNC control that supports helical interpolation; verify controller capability before use. Secure the 0.625-inch shank in a collet or end mill holder with appropriate runout tolerance for thread milling. Confirm workpiece is fixtured rigidly, as vibration directly affects thread form accuracy. Apply external flood or mist coolant for chip flushing, as this tool does not have coolant-through capability.