Harvey Tool 998612 Square End Mill 3/16 Inch Downcut Carbide

Product Description

The HARVEY TOOL 998612 is a solid carbide square end mill designed for precision milling in metal, wood, composite, and plastic workpieces. With a 3/16-inch cutting diameter, a 0.57-inch length of cut, and a downcut flute geometry, this tool pushes chips downward during cutting, which helps reduce surface tearout and keeps the top edge of the workpiece clean. The 20-degree helix angle and right-hand cut with right-hand flute orientation are standard for conventional milling setups. The bright, uncoated finish is suited to applications where coating interaction with the workpiece material is a concern. This is a single-end, centercutting tool, meaning it can be plunged directly into material.

This end mill is used in CNC machining centers, manual knee mills, and router-table setups where a small-diameter, downcut tool is required. The downcut flute pattern makes it especially useful when machining laminates, veneers, wood composites, or thin-walled aluminum parts where a clean top surface finish is critical. The 3/16-inch shank diameter fits standard collets and end mill holders in that size range. The 2-inch overall length keeps the tool rigid and reduces deflection during cuts, which is important when running at the small diameters this tool covers.

Key Features

• Downcut flute geometry minimizes surface tearout on the top face of the workpiece
• Centercutting design allows direct plunge entry without a pre-drilled hole
• Solid carbide construction provides rigidity and wear resistance at small diameters
• 20-degree helix angle supports stable chip evacuation in a downward direction
• Bright, uncoated finish suitable for materials sensitive to coated tool interaction
• Right-hand cut and right-hand flute orientation for use in standard spindle configurations

Compatibility

Designed as a direct-fit replacement for standard 3/16-inch shank collets and end mill holders used in CNC machining centers and manual milling machines requiring a downcut square end mill.

Installation Notes

Installation is performed by a machinist or CNC setup technician. Power down the spindle and verify zero spindle rotation before inserting or removing the tool from the collet or holder. Use a calibrated torque wrench appropriate for the holder type when tightening collet nuts to avoid overtightening. Inspect the shank and cutting edges for chips or damage before each use, and confirm runout with a dial indicator after tool installation to ensure proper seating.