Carmex S0250C3536UN Thread Mill 8-36 Unf 1/4 Inch Shank

Product Description

The CARMEX S0250C3536UN is a helical flute thread mill designed for cutting internal UNF threads to the 8-36 specification. Built from solid carbide in material grade MT7 and coated with TiAlN for heat and wear resistance, this mini thread mill handles precision threading in tight bores. The cutting diameter is 0.13 inches with a length of cut of 0.35 inches, making it well suited for small-diameter internal thread applications. With 3 flutes and support for both left-hand and right-hand flute direction, it delivers consistent thread form in a single helical pass. Licensed machinists and CNC programmers use this tool in precision machining environments where tap breakage risk must be eliminated.

This thread mill is used in precision CNC machining applications requiring 8-36 UNF internal threads. The mini thread mill profile fits into small bores where standard taps cannot operate safely. It is appropriate for use in ferrous and non-ferrous materials where TiAlN coating provides thermal protection at elevated spindle speeds. Typical applications include aerospace, medical device, and general precision component machining where thread quality and tool life are critical. The 1/4 inch shank diameter accommodates standard collet and end mill holders on milling machines and machining centers.

Key Features

• Solid carbide construction in material grade MT7 for rigidity and wear resistance
• TiAlN coating reduces heat buildup and extends tool life in demanding materials
• 3-flute helical design supports both left-hand and right-hand thread milling
• Mini thread mill profile with 0.13 inch cutting diameter for small-bore internal threading
• 36 TPI UNF thread standard with 0.35 inch length of cut
• No coolant-through design - external coolant or flood coolant applies at the operator's discretion

Compatibility

Designed for use in CNC milling machines and machining centers with standard 1/4 inch collet or end mill holders. Intended for cutting 8-36 UNF internal threads per the UNF thread standard.

Installation Notes

Thread mills of this type are installed by qualified CNC machinists or tooling technicians. Ensure the machine spindle is fully stopped and the tool holder is clean and free of debris before securing the shank. Program the helical interpolation path to match the 8-36 UNF thread specification using the correct pitch and entry lead. Do not exceed the manufacturer's recommended spindle speed and feed rate for the work material; consult CARMEX cutting data for MT7 grade carbide with TiAlN coating.