Scientific Cutting Tools TM400-13HA Thread Mill 1/2-13 Unc

Product Description

The SCIENTIFIC CUTTING TOOLS TM400-13HA is a helical flute thread mill designed for cutting 1/2-13 UNC threads in both internal and external applications using a single tool. Built from submicron-grade solid carbide and finished with an AlTiN+ coating, it delivers heat resistance and edge durability in demanding CNC milling operations. The 4-flute, right-hand helical geometry produces clean thread forms while maintaining tool stability. Cutting diameter is 0.4 inches, length of cut is 1.108 inches, and overall length is 3.5 inches. Machinists and tool and die professionals select this tool for precision threading on machining centers.

This thread mill is suited for shops running CNC machining centers on ferrous and non-ferrous materials where a single tool must handle both internal and external 1/2-13 UNC thread forms. The 0.5 inch shank diameter provides rigid tool holding in standard ER or end mill collet systems. The AlTiN+ coating makes it a practical choice for dry or semi-dry cutting environments where heat buildup at the cutting zone is a concern. No coolant-through capability is present, so flood or mist coolant applied externally is the standard approach for heat management.

Key Features

• Cuts internal and external 1/2-13 UNC threads with a single tool
• Submicron-grade solid carbide substrate for edge strength and wear resistance
• AlTiN+ coating provides thermal barrier for extended tool life in harder materials
• 4-flute right-hand helical design for stable cutting action and smooth thread finish
• 0.4 inch cutting diameter with 1.108 inch length of cut accommodates typical thread depth requirements
• 0.5 inch shank diameter fits standard collet and end mill holders

Compatibility

Designed for use on CNC machining centers capable of helical interpolation, with a 0.5 inch shank diameter compatible with standard ER collets and end mill holders. Produces 1/2-13 UNC thread forms to inch thread standard in both internal bores and external diameters.

Installation Notes

Thread milling requires a CNC control with helical interpolation capability - confirm machine compatibility before setup. Secure the 0.5 inch shank in a balanced, properly torqued collet or end mill holder to minimize runout, which directly affects thread accuracy. No coolant-through ports are present on this tool, so direct external flood or mist coolant at the cutting zone to manage heat. Always verify programmed thread depth and helix pitch in the CNC program against the workpiece thread specification before running the first part.