Harvey Tool 987122-C8 Thread Mill 6-32 Internal Solid Carbide

Product Description

The HARVEY TOOL 987122-C8 is a solid carbide helical flute thread mill designed for cutting internal 6-32 threads. It operates on a 1/8-inch shank diameter and produces threads at 32 teeth per inch using a 2.80 mm cutting diameter. The titanium diboride coating reduces friction and extends tool life in demanding materials. With 3 flutes and a 3/8-inch length of cut, this mill produces accurate, clean thread forms in a single helical pass. It is installed in CNC machining centers and is suited for machinists and toolmakers working in precision manufacturing environments.

This thread mill is intended for internal thread milling applications where a 6-32 thread form is required. The 2-inch overall length provides adequate reach in standard CNC tool holders. A minimum nominal hole diameter of 0.138 inches is required for proper tool entry and thread engagement. It is best suited for use in CNC machining operations requiring tight tolerances on small-diameter internal threads in metals and engineered materials.

Key Features

• Solid carbide construction for rigidity and wear resistance in precision thread milling
• Titanium diboride coating reduces friction and improves tool longevity
• 3 helical flutes produce smooth chip evacuation during internal thread milling
• 32 TPI thread form with a 2.80 mm cutting diameter for 6-32 internal threads
• 1/8-inch shank diameter compatible with standard small-bore CNC collet systems
• No coolant-through design — suitable for external flood or mist coolant application

Compatibility

Designed for internal 6-32 thread milling operations requiring a minimum nominal hole diameter of 0.138 inches. Intended for use in CNC machining centers with standard 1/8-inch collet or end mill holders.

Installation Notes

Installation and operation should be performed by a qualified CNC machinist or toolroom professional. Secure the 1/8-inch shank in a properly sized collet or tool holder to the spindle manufacturer's specified runout tolerance before operation. Verify correct thread milling cycle programming — helical interpolation is required for proper thread form generation. Never use this tool in a manual drill press or non-CNC application.