Scientific Cutting Tools SPTM290A Single Profile Thread Mill

Product Description

The SCIENTIFIC CUTTING TOOLS SPTM290A is a solid carbide single profile thread mill designed to cut both internal and external threads ranging from 3/8-14 to 3/8-40, covering 14 to 40 TPI in a single tool. Built from submicron-grade carbide and coated with AlTiN+, it handles a wide thread range without a tool change. The 4-flute geometry provides efficient chip evacuation and stable cutting action. With a 0.29-inch cutting diameter and 0.60-inch length of cut, this tool is well suited for precision thread milling in CNC machining centers where accuracy and surface finish are critical. Machinists and tooling specialists specify this tool for both prototype and production work.

The SPTM290A is used in CNC machining applications requiring a single tool to produce multiple thread pitches in the 3/8-inch size range. It is appropriate for threading operations in ferrous and non-ferrous materials where the AlTiN+ coating provides heat resistance and extended tool life. Both internal blind-hole and external thread profiles are achievable, making it a flexible choice for job shops and production facilities running tight-tolerance threaded features.

Key Features

• Cuts internal and external threads from 14 to 40 TPI in a single tool
• Submicron solid carbide construction for rigidity and wear resistance
• AlTiN+ coating for elevated heat resistance and extended tool life
• 4-flute design promotes chip evacuation and cutting stability
• 0.29-inch cutting diameter with 0.192-inch neck diameter for reach into thread profiles
• 3-inch overall length accommodates standard CNC toolholding setups

Compatibility

Designed as a single profile thread mill for 3/8-inch thread sizes ranging from 3/8-14 to 3/8-40, compatible with CNC machining centers using standard 3/8-inch shank toolholders.

Installation Notes

Thread milling is performed by CNC machinists using helical interpolation programs on 3-axis or higher machining centers. Ensure the tool is seated securely in a collet or milling chuck rated for the shank diameter before operation. Verify spindle speed, feed rate, and helix pitch in the CAM program before cutting, as these parameters are specific to the workpiece material and thread specification. Power down and lock out the spindle before making any tool changes or adjustments.