Scientific Cutting Tools TM140-32H Thread Mill 10-32 Unf

Product Description

The SCIENTIFIC CUTTING TOOLS TM140-32H is a solid carbide helical flute thread mill designed to cut both internal and external 10-32 UNF threads in a single tool path. Built from submicron carbide with a bright uncoated finish, it delivers clean thread geometry across a wide range of materials. The tool features a 0.14-inch cutting diameter, a 0.388-inch length of cut, and an overall length of 2.5 inches. With 3 right-hand flutes and 32 teeth per inch, it is suited for precision threading operations on CNC machining centers where a single cutter needs to handle both thread directions without a tool change.

This thread mill is used in CNC milling applications requiring 10-32 UNF thread profiles in ferrous and non-ferrous workpieces. Its helical flute geometry reduces cutting forces and chip load, making it appropriate for tight-tolerance work in aerospace, medical device, and general precision machining environments. The 1/4-inch shank diameter fits standard ER and straight-bore collet holders commonly found in vertical and horizontal machining centers. It does not include coolant-through capability, so flood or mist coolant delivery is recommended at the spindle or fixture level.

Key Features

• Cuts internal and external 10-32 UNF threads with a single tool
• Solid submicron carbide construction for wear resistance and edge retention
• 3 right-hand helical flutes for efficient chip evacuation
• 32 TPI with 0.14-inch cutting diameter for fine-thread precision
• Bright uncoated finish compatible with a wide range of workpiece materials
• 1/4-inch shank fits standard collet toolholders without special adapters

Compatibility

Designed for use on CNC machining centers with a 1/4-inch collet or straight-bore toolholder. Cuts 10-32 UNF internal and external thread profiles per the Unified National Fine thread standard.

Installation Notes

Thread mills must be programmed with helical interpolation on a CNC machining center - they are not suitable for manual or drill-press operation. Secure the shank fully in a collet or toolholder to the manufacturer-recommended engagement depth before beginning a cut. Power down the machine and verify zero-energy state before changing or inspecting the tool. Confirm thread depth, pitch, and direction in the CAM program before cutting the first part.