Harvey Tool 999878 Square End Mill 5/64 in 2 Flute Carbide

Product Description

The HARVEY TOOL 999878 is a solid carbide square end mill designed for precision milling in metalworking and machining applications. With a cutter diameter of 5/64 inches (0.0781 inches) and a 1/8 inch shank diameter, this tool is built for tight-tolerance work in small-feature milling. It features a 2-flute, downcut geometry with a 20-degree helix angle, promoting smooth chip evacuation and clean surface finishes. The single-end design and bright, uncoated finish make it well suited for general-purpose cuts where coating chemistry is not required. This end mill is typically installed and run by machinists and CNC operators working with light-duty spindle setups.

This end mill is appropriate for use in vertical machining centers, CNC mills, and manual milling machines handling small-feature work. The 5/64 inch diameter is commonly used in die, mold, and precision part applications where slot widths and profile cuts demand tight dimensional control. The 13/32 inch length of cut and 2 inch overall length allow sufficient reach for shallow-to-moderate pocket and slot milling. The downcut flute orientation is particularly useful when surface finish on the top edge of the workpiece is a priority.

Key Features

• Solid carbide construction for rigidity and wear resistance in precision milling
• 5/64 inch (0.0781 inch) cutter diameter for small-feature and tight-tolerance work
• Downcut flute geometry supports clean top-edge surface finish
• 2-flute design promotes chip clearance in slotting and light profiling
• 20-degree helix angle balances cutting efficiency with tool stability
• Bright, uncoated finish suitable for general-purpose machining without coating requirements

Compatibility

Designed as an OEM-style solid carbide square end mill for use in standard 1/8 inch collets and tool holders on CNC and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully powered down and locked out before changing tooling. Seat the 1/8 inch shank fully and evenly in a matching collet or end mill holder and torque to the tool holder specification. Verify runout with a dial indicator before beginning any cut to protect both the tool and workpiece.