Scientific Cutting Tools SPTM120 Single Profile Thread Mill

Product Description

The SCIENTIFIC CUTTING TOOLS SPTM120 is a single profile thread mill designed to cut both internal and external threads ranging from 8-32 to 8-56, covering 32 to 56 TPI. Built from submicron-grade solid carbide with a bright, uncoated finish, this tool delivers the rigidity and edge retention required for precision thread milling in production and job-shop environments. The 3-flute geometry balances chip evacuation with cutting stability. With a cutting diameter of 0.12 inches and an overall length of 2 inches, this mill suits applications where tight tolerances and clean thread form are non-negotiable. Machinists and CNC operators working in aerospace, medical, and general machining will find this tool well-suited to demanding threading operations.

This thread mill is intended for use on CNC machining centers capable of helical interpolation. It handles both internal and external thread profiles across the 8-32 to 8-56 unified thread range, making it a versatile single-tool solution for shops threading small-diameter features. The 3/16-inch shank diameter fits standard ER collet chucks and other small-bore toolholders. Typical applications include tapped hole production in aluminum, steel, stainless, and similar materials where thread milling is preferred over tapping for improved tool life and thread quality.

Key Features

• Cuts internal and external threads from 8-32 to 8-56 in a single tool
• Submicron-grade solid carbide construction for rigidity and edge retention
• 3-flute design promotes chip evacuation and cutting stability
• Bright, uncoated finish suitable for a broad range of workpiece materials
• Narrow neck diameter of 0.07 inches allows reach into confined thread features
• 0.30-inch length of cut and neck length support standard thread depths in this size range

Compatibility

Designed for use in CNC machining centers with helical interpolation capability; fits standard 3/16-inch bore collet chucks and compatible small-bore toolholding systems for single profile thread milling in the 8-32 to 8-56 thread range.

Installation Notes

Thread milling with this tool requires a CNC machining center programmed for helical interpolation - confirm the control supports this cycle before setup. Secure the 3/16-inch shank in a balanced, properly torqued collet chuck to minimize runout. Follow the machine tool builder and tooling manufacturer guidelines for speeds, feeds, and depth-of-cut per pass. Inspect the cutting edge before each use; solid carbide tools are brittle and should not be used if chipping is visible.