Scientific Cutting Tools TMLR139-32ELA Thread Mill 10-32

Product Description

The SCIENTIFIC CUTTING TOOLS TMLR139-32ELA is a solid carbide helical flute thread mill designed for cutting internal 10-32 UNF threads. It features a 0.139 inch cutting diameter, a 0.6 inch length of cut, and a 2.5 inch overall length, making it a long-reach tool suited for threading operations where clearance is limited. The submicron carbide grade delivers rigidity and wear resistance, while the AlTiN+ coating improves heat resistance at the cutting edge. With 3 right-hand flutes and 32 teeth per inch, this tool runs on CNC machining centers and is installed and operated by machinists and tooling specialists working in precision thread-milling applications.

This thread mill is used for producing internal 10-32 UNF threads in a single helical interpolation pass on a CNC machining center. The long-reach configuration makes it appropriate for deeper-cavity thread applications where a standard-reach tool would not clear the workpiece. It is commonly applied in aerospace, automotive, and general precision machining environments where thread quality and repeatability are critical. The right-hand flute direction is compatible with conventional CNC thread-milling cycles.

Key Features

• Solid carbide construction in a submicron material grade for rigidity and extended tool life
• AlTiN+ coating provides elevated heat resistance and reduces built-up edge during cutting
• Long-reach design with 2.5 inch overall length for deep-cavity thread access
• 3 right-hand helical flutes for smooth chip evacuation during internal thread milling
• Cuts 10-32 UNF internal threads at 32 TPI with a 0.139 inch cutting diameter
• 0.6 inch length of cut accommodates standard thread depth requirements for the 10-32 thread form

Compatibility

Designed for use in CNC machining centers capable of helical interpolation, with a 1/4 inch shank diameter for standard toolholding systems. Suited for internal 10-32 UNF thread milling in solid materials.

Installation Notes

This tool is installed by machinists in standard 1/4 inch toolholders on CNC machining centers. Confirm spindle speed, feed rate, and helical interpolation parameters in the CAM program before running. Ensure the toolholder is properly torqued and the tool is seated to the correct gauge length before operation. Coolant-through is not supported on this tool; external coolant or air blast is recommended to manage chip evacuation and heat.