Seco 17004507 Thread Mill 3/8-18 Nptf 3 Flutes Solid Carbide

Product Description

The SECO 17004507 is a straight flute thread mill designed for cutting 3/8-18 NPTF threads in both external and internal applications. Built from solid carbide and coated with AlCrN for heat and wear resistance, this tool is suited for production environments where thread accuracy and tool life are priorities. It runs on a 5/16 inch shank, has a cutting diameter of 0.305 inches, a length of cut of 0.625 inches, and an overall length of 3 inches. Machinists and CNC operators use this tool in milling machines and machining centers to produce NPTF pipe threads in a single helical pass.

This thread mill is intended for use on CNC machining centers capable of helical interpolation. It is suited for threading operations in ferrous and non-ferrous materials where NPTF pipe thread forms are required, such as hydraulic fittings, pneumatic ports, and fluid system components. With 18 teeth per inch and 3 flutes, it produces a clean thread form in both through and blind hole configurations. The AlCrN coating helps manage heat buildup at higher cutting speeds, making it a practical choice for shops running lights-out or high-cycle operations.

Key Features

• Cuts 3/8-18 NPTF threads in external and internal configurations
• Solid carbide construction for rigidity and dimensional stability
• AlCrN coating improves heat resistance and extends tool life
• 3 straight flutes with 18 teeth per inch for consistent thread form
• 0.305 inch cutting diameter with 0.625 inch length of cut
• No coolant-through design — suitable for flood or mist coolant delivery

Compatibility

Designed for use in CNC machining centers with helical interpolation capability. Produces 3/8-18 NPTF thread forms in both external and internal applications. Verify machine spindle compatibility with 5/16 inch shank toolholders before use.

Installation Notes

Installation and operation should be performed by a qualified machinist or CNC operator familiar with thread milling cycles. Secure the shank firmly in a collet or toolholder rated for 5/16 inch shanks and verify runout before cutting. Program the correct helical interpolation cycle for the NPTF thread pitch and diameter — do not use this tool as a standard end mill or drill. Inspect the tool for coating wear or chipping between runs, especially in high-cycle applications.