Scientific Cutting Tools SPTM372 Thread Mill 4 Flute Carbide

Product Description

The SCIENTIFIC CUTTING TOOLS SPTM372 is a single profile thread mill designed to cut both internal and external threads across a range from 1/2-12 to 1/2-32 TPI. Built from submicron solid carbide, it delivers the rigidity and edge retention needed for precision threading in demanding production environments. With a 0.372-inch cutting diameter, a 0.375-inch shank diameter, and a 3-inch overall length, this tool is sized for CNC machining centers running thread milling cycles. The bright, uncoated finish makes it well suited for threading operations where coating buildup or adhesion is a concern. Four flutes provide efficient chip evacuation across the full thread pitch range.

The SPTM372 handles both internal and external threading in a single tool, reducing the need for multiple taps or dies in a job setup. It is appropriate for threading 1/2-inch fastener profiles in materials where solid carbide performs reliably, including steels, aluminum alloys, and similar workpiece materials. The 0.85-inch length of cut and 0.24-inch neck diameter allow it to reach thread depths without excessive overhang in standard CNC setups. This tool is a practical choice for machine shops, tool and die operations, and production facilities running thread milling on multi-axis or standard 3-axis CNC mills.

Key Features

• Cuts internal and external threads from 12 to 32 TPI in a single tool
• Submicron solid carbide construction for superior hardness and edge retention
• 0.372-inch cutting diameter with 0.24-inch neck diameter for clearance in tight bores
• 0.85-inch length of cut accommodates standard thread depth requirements
• Four flutes for efficient chip evacuation during thread milling cycles
• Bright, uncoated finish suitable for applications where coatings are undesirable

Compatibility

Designed for use in CNC machining centers capable of thread milling cycles, compatible with 1/2-inch thread profiles ranging from 12 to 32 TPI on both internal and external applications.

Installation Notes

Installation and operation should be performed by a qualified CNC machinist or tooling specialist. Secure the 0.375-inch shank in a properly sized collet or end mill holder and verify runout before use, as excessive runout will damage thread form accuracy. Confirm that the CNC control is programmed for a helical thread milling interpolation cycle appropriate for the target thread size and pitch. Do not use this tool in manual milling machines or hand-held drilling equipment.