Osg 4100002811 Thread Mill 1/4-32 3 Flute Solid Carbide

Product Description

The OSG 4100002811 is a solid carbide helical flute thread mill designed for cutting 1/4-32 UNEF internal threads in a single helical pass. With a 0.190-inch cutting diameter, a 0.374-inch length of cut, and a right-hand flute direction, this tool handles fine unified extra-fine thread profiles with consistent accuracy. The EXO coating improves surface hardness and wear resistance, extending tool life in production environments. A 1/4-inch shank diameter suits standard milling collets and shrink-fit holders. Licensed machinists and CNC programmers working in aerospace, instrumentation, and precision manufacturing will find this tool suited to tight-tolerance threading applications.

This thread mill is intended for use in CNC machining centers capable of helical interpolation. It produces 1/4-32 UNEF threads in materials ranging from aluminum and brass to hardened steels, depending on cutting parameters. The 3-inch overall length provides clearance in blind-hole and through-hole applications at typical depth requirements for this thread size. With three flutes and 32 teeth per inch, the tool balances material removal rate against fine pitch thread geometry.

Key Features

• Solid carbide construction for rigidity and dimensional stability under load
• EXO coating for enhanced wear resistance and reduced friction at the cutting edge
• Right-hand helical flute geometry produces 1/4-32 UNEF thread profile in a single interpolation pass
• Three-flute design balances chip evacuation and cutting stability at fine pitch
• 0.374-inch length of cut accommodates standard thread depth requirements for 1/4-32 fastener applications
• No coolant-through — external coolant or air blast required for chip management

Compatibility

Designed for use in CNC machining centers with helical interpolation capability; produces 1/4-32 UNEF threads and fits 1/4-inch diameter collet chucks and shrink-fit toolholders in the Series 41000 OSG thread mill product line.

Installation Notes

Installation and operation should be performed by qualified CNC machinists or tooling technicians. Secure the 1/4-inch shank in a properly sized collet or shrink-fit holder and verify runout before threading operations begin. Program helical interpolation according to the thread pitch and workpiece material; consult OSG Series 41000 cutting data for feed and speed parameters. Coolant-through is not available on this tool, so direct external coolant or air blast at the cutting zone to manage chip evacuation and heat.