Harvey Tool 842917-C3 Thread Mill M6x1 3 Flute Solid Carbide

Product Description

The HARVEY TOOL 842917-C3 is a solid carbide helical flute thread mill designed for cutting M6x1 threads in both internal and external applications. With a 0.186-inch cutting diameter, a 0.748-inch length of cut, and a 2.5-inch overall length, this tool covers a wide range of threading tasks in a single pass. The 3-flute helical geometry reduces cutting forces and improves chip evacuation compared to straight-flute designs. An AlTiN coating provides elevated heat resistance and extended tool life in ferrous and hard materials. This tool is used by machinists and CNC operators working in precision manufacturing, job shops, and production environments.

The 842917-C3 is suited for threading M6x1 holes and external thread profiles in materials where rigidity and coating performance are priorities. The 1/4-inch shank diameter fits standard collet and end mill holders common in vertical machining centers and CNC mills. Both internal and external thread milling capability makes this a versatile option when a single tool must handle multiple threading operations in one setup. Coolant-through is not supported on this tool, so conventional flood or mist cooling should be used when required by the workpiece material.

Key Features

• Cuts M6x1 threads internally and externally with a single tool
• 3 helical flutes improve chip flow and reduce cutting force
• AlTiN coating resists heat buildup and extends tool life in ferrous alloys and hardened steels
• Solid carbide construction provides rigidity and dimensional accuracy at high RPM
• 0.186-inch cutting diameter with 0.748-inch length of cut handles standard M6 thread depths
• 1/4-inch shank fits widely available collet holders and tooling systems

Compatibility

Designed for use in CNC vertical machining centers and milling machines equipped with standard 1/4-inch collet or end mill holders. Suitable for M6x1 internal and external thread milling operations in solid carbide-appropriate workpiece materials.

Installation Notes

This tool is installed and operated by machinists and CNC programmers. Secure the 1/4-inch shank in a properly sized collet or end mill holder torqued to the toolholder specification before operation. Verify spindle runout is within acceptable limits prior to threading to maintain thread accuracy and tool life. Coolant through is not available on this tool — use external flood or mist coolant directed at the cutting zone when the workpiece material requires it.