Harvey Tool 842907-C3 Thread Mill M4x0.7 3 Flute Altin

Product Description

The HARVEY TOOL 842907-C3 is a solid carbide helical flute thread mill designed to cut M4x0.7 threads in both internal and external applications. With 3 flutes and an AlTiN coating, this tool delivers clean thread profiles and extended tool life in a wide range of workpiece materials. The cutting diameter is 0.1240 inches, the length of cut is 0.4410 inches, and the overall length is 2.5 inches. The 3/16-inch (0.1875 inch) shank fits standard collet chucks and toolholders used in CNC machining centers. This is a precision ground carbide tool intended for use by skilled machinists and toolroom professionals.

This thread mill is suited for CNC machining of M4x0.7 threads in both through-hole and blind-hole configurations. The helical flute geometry allows a single-pass thread interpolation strategy, reducing cycle time compared to tapping operations. It is appropriate for use in steel, stainless steel, aluminum, and other machinable metals. Internal thread milling requires a machine capable of helical interpolation. External thread milling is also supported with this tool, making it a versatile option for shops producing small-diameter threaded features on precision components.

Key Features

• Cuts M4x0.7 threads in both internal and external configurations
• 3-flute helical geometry supports smooth chip evacuation and reduced cutting forces
• AlTiN coating improves heat resistance and extends tool life in ferrous and hardened materials
• Solid carbide construction provides rigidity and dimensional stability at high spindle speeds
• 0.4410-inch length of cut accommodates typical thread depth requirements for M4 fastener applications
• No coolant-through design - suitable for use with external coolant or mist lubrication

Compatibility

Designed as an OEM-specification helical flute thread mill for M4x0.7 thread profiles in CNC machining applications requiring helical interpolation capability.

Installation Notes

Installation and use should be performed by qualified machinists on CNC machining centers capable of helical interpolation. Secure the 3/16-inch shank in a precision collet or shrink-fit toolholder and verify runout before cutting. Confirm correct thread interpolation programming before engaging the workpiece. Follow all machine guarding and personal protective equipment requirements during operation.