Carmex S0250C2832UN Thread Mill 6-32 Unc 3 Flute Carbide

Product Description

The CARMEX S0250C2832UN is a solid carbide helical flute thread mill designed for cutting internal 6-32 UNC threads in a single helical interpolation pass. Built to Mini thread mill standards, it features a 0.1 inch cutting diameter, a 0.25 inch shank diameter, and a TiAlN coating that extends tool life in ferrous and high-temperature alloy materials. With 3 flutes and 32 teeth per inch, the tool produces clean, precise thread forms in applications where tap breakage or through-coolant tooling is not a requirement. Licensed machinists and CNC programmers specify this tool for tight-tolerance internal threading in small-diameter bores.

This thread mill is suited for CNC machining centers performing internal threading operations in steel, stainless steel, cast iron, and similar materials. The Mini-style body and 0.28 inch length of cut make it appropriate for shallow-to-medium depth thread engagement in small tapped holes. The left-hand and right-hand flute direction compatibility offers flexibility across a range of CNC interpolation strategies. Typical applications include precision component manufacturing, aerospace hardware, and general metalworking where 6-32 UNC internal threads are required.

Key Features

• Solid carbide construction in material grade MT7 for rigidity and wear resistance
• TiAlN coating for extended tool life in ferrous and high-temp alloy materials
• 3-flute helical design produces clean internal thread forms in a single pass
• Mini thread mill profile fits small-bore internal threading applications
• Compatible with left-hand and right-hand flute direction interpolation strategies
• No coolant-through requirement simplifies setup on standard machining centers

Compatibility

Designed for CNC machining centers performing internal 6-32 UNC helical thread milling operations where a 0.25 inch shank diameter and Mini-style thread mill form factor are specified.

Installation Notes

Installation and operation should be performed by qualified CNC machinists or toolroom personnel familiar with helical thread interpolation programming. Ensure the tool is properly seated and torqued in an appropriate collet or end mill holder before spindle engagement. Confirm CNC program parameters for helix pitch, interpolation direction, and depth of cut match the 6-32 UNC thread specification before cutting. Never exceed the recommended radial engagement for solid carbide thread mills in hardened or abrasive materials.