Harvey Tool 959520-C6 Thread Mill 6-32 to 6-40 Solid Carbide

Product Description

The HARVEY TOOL 959520-C6 is a single profile thread mill designed to cut both internal and external threads in the No. 6 thread size range, covering 32 to 40 TPI. Built from solid carbide and finished with an AlTiN Nano coating, this tool delivers consistent thread geometry across a range of thread forms without requiring a tool change between thread sizes. With a cutting diameter of 0.098 inches, a neck diameter of 0.0625 inches, and an overall length of 2 inches, it is sized for tight-clearance applications. The 4-flute design supports efficient chip evacuation in both ferrous and non-ferrous materials. Machinists and CNC operators in precision machining shops are the primary users.

This thread mill is suited for machining centers performing thread milling operations on small-diameter features in the No. 6 fastener range. Its ability to cut both internal threads in blind and through holes and external threads on posts or bosses with a single tool reduces setup time and tooling inventory. The 3/16-inch shank diameter fits standard collet and toolholder systems used in CNC milling environments. Applications include precision components in aerospace, medical, and general manufacturing where thread accuracy and surface finish are critical.

Key Features

• Cuts internal and external threads from 32 to 40 TPI in a single tool
• Solid carbide construction for rigidity and long tool life in hard and abrasive materials
• AlTiN Nano coating reduces heat buildup and extends wear resistance at the cutting edge
• 0.098-inch cutting diameter with 0.0625-inch neck diameter for access to tight-clearance thread features
• 4-flute geometry supports chip evacuation and consistent thread form
• 0.5-inch neck length provides clearance depth for blind hole threading operations

Compatibility

Designed for use in CNC machining centers with standard collet systems accepting a 3/16-inch shank; suitable for thread milling No. 6-32 through No. 6-40 internal and external thread features in a variety of workpiece materials.

Installation Notes

Thread milling requires a CNC machining center capable of helical interpolation; verify control compatibility before programming. Secure the shank fully in a collet or toolholder to the recommended engagement depth to minimize runout. Confirm spindle speed, feed rate, and coolant or lubricant settings match the workpiece material before cutting. Handle solid carbide tooling carefully to avoid chipping the cutting edges during setup and storage.