Scientific Cutting Tools TMLR4-.7MMA Thread Mill M4x0.7

Product Description

The SCIENTIFIC CUTTING TOOLS TMLR4-.7MMA is a solid carbide helical flute thread mill designed for cutting internal M4x0.7 metric coarse threads. Built from submicron carbide stock and finished with an AlTiN+ coating, it delivers high wear resistance in demanding cutting environments. The tool features a 0.12-inch cutting diameter, 0.30-inch length of cut, and a 2.5-inch overall length on a 1/4-inch shank. Three right-hand flutes and a long-reach profile allow thread milling in blind and through holes where tap breakage risk is a concern. Machinists and CNC operators in job shops, aerospace, and general manufacturing use this tool for precise metric thread production.

This thread mill is suited for internal M4x0.7 metric coarse thread applications in a variety of materials. The long-reach design accommodates deeper bores and provides clearance in confined workpiece geometries. Its 0.1575-inch minimum nominal bore diameter defines the smallest hole it will thread effectively. It is used in CNC machining centers running helical interpolation cycles for thread milling routines across production and prototype work.

Key Features

• M4x0.7 metric coarse internal thread profile
• Solid carbide construction with submicron grain material grade for rigidity and edge retention
• AlTiN+ coating for high-temperature wear resistance and extended tool life
• Long-reach design allows access to deeper bore applications
• Three right-hand helical flutes for efficient chip evacuation
• No coolant-through - suitable for flood or mist coolant applied externally

Compatibility

Designed for use in CNC machining centers capable of helical interpolation; compatible with 1/4-inch tool holders and collets for internal M4x0.7 metric coarse thread milling operations.

Installation Notes

Installation and operation should be performed by a qualified CNC machinist or toolroom professional. Confirm the tool holder collet is clean and properly torqued before running. Program the spindle and helical interpolation path per the thread mill manufacturer guidelines for M4x0.7 pitch and the specific workpiece material. Verify minimum bore diameter meets the 0.1575-inch requirement before beginning the threading cycle.