Scientific Cutting Tools TM.290-16 Thread Mill 3/8-16

Product Description

The SCIENTIFIC CUTTING TOOLS TM.290-16 is a straight flute thread mill designed for cutting internal 3/8-16 UNC threads in a CNC machining environment. Built from submicron-grade solid carbide, it delivers the rigidity and wear resistance required for consistent thread form across production runs. The tool features 4 flutes, a cutting diameter of 0.29 inches, and a length of cut of 0.775 inches. A bright finish is applied to the flute geometry. Shank diameter is 5/16 inches, and overall length is 3.5 inches. This mill is installed and operated by machinists and CNC programmers working in metalworking, toolroom, and production machining applications.

This thread mill is suited for internal thread milling of 3/8-16 UNC threads in materials compatible with solid carbide tooling, including steel, stainless steel, aluminum, and cast iron. It is appropriate for use in vertical and horizontal machining centers where helical interpolation is available. The straight flute design makes it a practical choice for through-hole and blind-hole threading operations where chip evacuation requirements are moderate. No coolant-through capability is present, so external coolant or misting strategies should be planned accordingly.

Key Features

• Cuts internal 3/8-16 UNC threads with a 16 TPI profile
• Submicron-grade solid carbide construction for extended tool life
• 4 straight flutes with bright finish for clean thread form
• 0.29 inch cutting diameter with 0.775 inch length of cut
• 5/16 inch shank diameter for standard ER or precision collet chucks
• 3.5 inch overall length provides clearance for most standard setups

Compatibility

Designed for internal thread milling of 3/8-16 UNC threads on CNC machining centers capable of helical interpolation. Compatible with standard 5/16 inch collet chucks and shrink-fit holders.

Installation Notes

Thread mills of this type are installed by machinists and CNC programmers and require a machining center with helical interpolation capability. Confirm runout on the tool holder before running to avoid thread form errors. Power down and lock out the spindle before making any tool changes. Consult the tool manufacturer or a speeds-and-feeds reference for appropriate cutting parameters for the workpiece material.