Harvey Tool 20660-C6 Tapered End Mill Solid Carbide 3 Flute

Product Description

The HARVEY TOOL 20660-C6 is a solid carbide tapered end mill designed for high-precision milling applications where tight tolerances and fine detail work are required. It features a 1-degree taper angle per side with a 0.0600-inch small end diameter, a 0.6000-inch length of cut, and a 3-flute geometry with a square end profile. The 30-degree helix angle promotes efficient chip evacuation while maintaining surface finish quality. Machinists and toolmakers install this end mill in CNC machining centers for contoured cavity work, draft angle milling, and miniature feature generation in mold, die, and precision component applications.

This end mill is suited for precision machining operations in both production and prototype environments. Its miniature geometry makes it well-suited for mold-making, die work, medical device components, and aerospace detail parts where fine tapered walls or small-radius features are required. The solid carbide construction handles hardened steels, stainless, aluminum, and non-ferrous alloys in rigid, high-speed setups. The 3/16-inch shank diameter and 3-inch overall length provide reach into deeper cavities while maintaining setup rigidity on compatible toolholders.

Key Features

• 1-degree taper angle per side for precise draft and contour milling
• 0.0600-inch small end diameter enables fine detail and miniature feature work
• Solid carbide construction for rigidity, wear resistance, and dimensional stability
• 3-flute square end geometry balances chip removal and finish quality
• 30-degree helix angle supports efficient chip evacuation in deep-cavity cuts
• 3/16-inch shank diameter fits standard collet and toolholder systems

Compatibility

Designed as an OEM-style replacement and standard tooling option in the Harvey Tool Miniature End Mills - Tapered - Square series, compatible with CNC machining centers and manual mills equipped with a 3/16-inch collet or toolholder.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician familiar with CNC tooling setup. Ensure the spindle is fully stopped and the machine is in a safe state before changing tooling. Seat the shank fully and evenly in the collet or toolholder and torque the retention mechanism per the toolholder manufacturer specification. Confirm runout with a dial indicator before initiating a cut to protect the small-diameter tip from deflection or breakage.