Accupro 12181665 Square End Mill 25/64 in 2 Flute Carbide

Product Description

The ACCUPRO 12181665 is a solid carbide square end mill designed for precision milling operations in metal, composite, and engineered material applications. With a 25/64 inch (0.3906 inch) cutting diameter and a 2-flute spiral configuration, this stub-length end mill delivers efficient chip evacuation and clean square-shoulder cuts. The 40-degree helix angle promotes smooth cutting action and reduced chatter. Manufactured from micrograin solid carbide, it maintains edge integrity at elevated cutting speeds. This tool is uncoated and suited for applications where coolant or cutting fluid is applied directly. Licensed machinists and CNC operators are the primary installers and users of this tooling.

This end mill is used in vertical machining centers, CNC knee mills, and manual milling machines for slotting, profiling, and peripheral milling. The stub length classification, with a 5/8 inch length of cut and 2 inch overall length, provides added rigidity in tight setups and shallow-depth operations. The 7/16 inch shank diameter is compatible with standard collet and end mill holder systems. Right-hand cut and right-hand flute geometry make it suitable for conventional climb-milling setups on most production floors.

Key Features

• 25/64 inch (0.3906 inch) cutting diameter with a mill diameter tolerance of +0.000 / -0.002 inches for precise fitment
• Micrograin solid carbide construction for extended tool life and edge retention
• 40-degree helix angle reduces cutting forces and improves surface finish
• Centercutting design allows plunge milling entry without a pre-drilled hole
• Stub length (2 inch OAL, 5/8 inch LOC) maximizes rigidity in shallow-depth applications
• Right-hand cut, right-hand flute spiral geometry for standard CNC and manual mill setups

Compatibility

Designed for use in standard 7/16 inch collet chucks and end mill holders on vertical machining centers and CNC milling platforms. Shank diameter tolerance is -0.0001 / -0.0004 inches for secure, concentric tool holding.

Installation Notes

This tooling should be installed by qualified machinists familiar with CNC or manual milling equipment. Ensure the spindle is fully stopped and the machine is locked out before changing tooling. Seat the shank fully into the collet or holder and tighten to the tool holder manufacturer specification. Inspect the cutting edges for chips or damage before each use, and apply appropriate cutting fluid for the workpiece material.