Scientific Cutting Tools SPTM372A Thread Mill 1/2-12 to 1/2-32

Product Description

The SCIENTIFIC CUTTING TOOLS SPTM372A is a single profile thread mill designed to cut internal and external threads in the 1/2-12 to 1/2-32 range, covering 12 to 32 TPI in a single tool. Built from submicron-grade solid carbide and finished with an AlTiN+ coating, it delivers consistent thread geometry and extended tool life in demanding machining environments. The 4-flute design provides smooth cutting action and chip evacuation. With a 0.372-inch cutting diameter, a 0.375-inch shank, and a 3-inch overall length, this tool fits standard CNC machining centers and milling machines. It is typically selected by machinists and tool-and-die professionals who need one tool to cover a broad TPI range on a single thread diameter.

The SPTM372A suits production and job-shop environments where versatility and precision are both priorities. Because it handles both internal and external threads, it reduces tool changes during operations that require both thread types on the same workpiece. The 0.85-inch length of cut and 0.24-inch neck diameter allow access into blind and through holes at the 1/2-inch thread size. It is appropriate for use in ferrous and non-ferrous materials where carbide tooling and AlTiN+ coating provide thermal and wear resistance.

Key Features

• Cuts internal and external threads from 12 to 32 TPI at the 1/2-inch thread size in a single tool
• Submicron-grade solid carbide construction for rigidity and wear resistance
• AlTiN+ coating for high-temperature performance and extended tool life
• 4-flute geometry supports efficient chip evacuation and smooth thread form
• 0.24-inch neck diameter and 0.85-inch length of cut enable access in confined bore conditions
• 3/8-inch shank diameter compatible with standard collet and end mill holders

Compatibility

Designed for use in CNC milling machines and machining centers equipped with standard 3/8-inch collet or end mill toolholding. Suitable for thread milling operations requiring 1/2-12 through 1/2-32 thread sizes on internal and external features.

Installation Notes

Installation and operation should be performed by qualified machinists familiar with CNC thread milling cycles and toolpath programming. Secure the shank in a properly sized collet or end mill holder and verify runout before cutting. Confirm spindle speed, feed rate, and helical interpolation parameters in the CNC program match the tool geometry and workpiece material before starting the cut. Do not use this tool in manual milling applications without appropriate threading cycle support.