Harvey Tool 71040 Single Profile Thread Mill 10-56 Tpi

Product Description

The HARVEY TOOL 71040 is a solid carbide single profile thread mill designed to cut both internal and external threads across a range of sizes from 10-24 to 10-56, covering 24 to 56 TPI. With a cutting diameter of 0.135 inches, a 0.25-inch shank, and a 4-flute geometry, this tool handles fine-pitch threading in a single pass per thread form. The bright uncoated finish suits general-purpose machining environments. At 2.5 inches overall length, it is sized for CNC machining centers running thread milling cycles in steel, aluminum, and similar workpiece materials.

This thread mill is used in precision machining operations where a single tool must produce multiple thread sizes without a tool change. It is suited for job shops, production shops, and toolrooms cutting 10-series threads in both through-hole and blind-hole applications. The ability to mill both internal and external thread forms with one tool reduces setup time and tooling inventory for operations running small-diameter thread programs.

Key Features

• Single profile design mills threads from 10-24 to 10-56 (24 to 56 TPI) with one tool
• Cuts both internal and external thread forms
• 0.135-inch cutting diameter with 0.070-inch neck diameter for clearance in tight bores
• 4-flute solid carbide construction for rigidity and tool life
• Bright uncoated finish suitable for a wide range of base materials
• 0.3125-inch neck length supports access to standard thread depths

Compatibility

Designed for use in CNC machining centers capable of helical interpolation thread milling cycles; accepts a 0.25-inch tool holder or collet.

Installation Notes

Thread milling requires a CNC control with helical interpolation capability - verify control support before programming. Secure the tool in a precision collet or shrink-fit holder to minimize runout, which directly affects thread quality and tool life. Always confirm spindle speed, feed rate, and helix pitch match the target thread specification per the tool manufacturer programming guidelines. Do not use in manual milling machines or without appropriate thread milling cycle programming.