Harvey Tool 70036-C3 Thread Mill 10-32 3 Flute Carbide

Product Description

The HARVEY TOOL 70036-C3 is a solid carbide helical flute thread mill designed to cut 10-32 unified fine threads in both internal and external applications. With a 3-flute geometry and AlTiN coating, this tool delivers efficient chip evacuation and extended tool life in ferrous and hard materials. The 1/8-inch (0.1250-inch) shank diameter and 0.1200-inch cutting diameter make it suited for tight-tolerance threading operations on CNC machining centers. At 32 teeth per inch and a 5/16-inch length of cut, it handles the full thread profile in a single helical interpolation pass.

This thread mill is used in precision CNC machining environments for threading operations where a tap would present breakage risk or where a single tool must produce both internal and external threads. Typical applications include aerospace, medical, and general metalworking components requiring 10-32 UNF threads. The 2-inch overall length provides clearance for most standard workholding setups. No coolant-through capability is present, so flood or mist coolant applied externally is the standard approach for chip management and heat control.

Key Features

• Cuts 10-32 internal and external threads with a single tool using helical interpolation
• 3-flute solid carbide construction for rigidity and wear resistance
• AlTiN coating increases surface hardness and heat resistance for dry or semi-dry cutting
• 0.1200-inch cutting diameter with 0.3120-inch length of cut covers standard 10-32 thread depth requirements
• 32 TPI geometry matches unified fine thread form precisely
• 2-inch overall length suits most vertical and horizontal CNC machining center setups

Compatibility

Designed for use on CNC machining centers capable of helical interpolation; compatible with 1/8-inch precision collet chucks and matching end mill holders. Suitable for cutting 10-32 UNF threads with a minimum nominal diameter of 0.1900 inch.

Installation Notes

Thread mills require a CNC control with helical interpolation capability — confirm this before programming. Secure the 1/8-inch shank in a precision collet or shrink-fit holder to minimize runout, which directly affects thread quality. Always verify spindle speed and feed rate against the material being threaded; AlTiN-coated tools are optimized for harder alloys and stainless steels. Power down and lock out the spindle before changing or inspecting the tool.