Accupro 12181641 Square End Mill 19/64 in 2 Flute Carbide

Product Description

The ACCUPRO 12181641 is a solid carbide square end mill designed for precision milling operations in metal, composite, and engineering-plastic workpieces. It features a 19/64 inch (0.2969 inch) cutting diameter, a 1/2 inch length of cut, and a 40-degree helix angle that promotes efficient chip evacuation and reduces cutting forces. The stub-length profile keeps the tool rigid under load. With two flutes and a right-hand spiral flute configuration, this end mill suits general-purpose slotting, profiling, and peripheral milling where tight tolerances and clean finishes are required. Machinists and tool-and-die technicians are the primary users of this tool class.

This end mill is suited for use in vertical machining centers, CNC mills, and manual knee mills where a 5/16 inch shank diameter collet or end mill holder is available. The centercutting geometry allows direct plunge entry into the workpiece without a pre-drilled hole, expanding its use in die-sinking, pocket milling, and contour work. The uncoated micrograin carbide substrate is well-matched to non-ferrous metals, aluminum alloys, plastics, and light-duty ferrous cuts where a bare carbide edge is preferred over a coated alternative.

Key Features

• 19/64 inch (0.2969 inch) cutting diameter with a mill diameter tolerance of +0.000 / -0.002 inches
• Solid micrograin carbide construction for rigidity and edge retention
• 40-degree helix angle for efficient chip flow and reduced cutting pressure
• Centercutting design allows direct plunge milling without a pilot hole
• Right-hand cut and right-hand flute orientation for standard CNC spindle compatibility
• Stub length overall at 2 inches OAL promotes deflection resistance in tight-tolerance work

Compatibility

Designed for use in any machine tool spindle accepting a 5/16 inch shank diameter via collet chuck, end mill holder, or hydraulic toolholder. No specific OEM system compatibility was stated in the product data.

Installation Notes

Installation and tool changes must be performed with the machine spindle fully stopped and the control in an estop or locked-out state per OSHA lockout/tagout requirements. Ensure the shank is fully seated and clamped to the minimum recommended engagement depth for the holder style in use. Inspect the collet or toolholder bore for runout before tightening, as excessive runout accelerates edge wear on carbide tooling. Do not use this tool beyond its stated length of cut or attempt to extend reach by reducing shank insertion depth.