Accupro 12177406 Square End Mill 1/4 in 6 Flute Solid Carbide

Product Description

The ACCUPRO 12177406 is a 6-flute solid carbide square end mill designed for high-performance milling in ferrous and non-ferrous materials. The tool carries a 0.25 inch cutting diameter, a 0.75 inch length of cut, and a 2.5 inch overall length. The AlTiN coating provides thermal resistance and extended tool life at elevated cutting speeds. The 45-degree helix angle promotes aggressive chip evacuation while reducing cutting forces, making this end mill well suited to finishing and semi-finishing passes where surface quality and dimensional accuracy are priorities. Licensed machinists and CNC programmers working in job shop or production environments are the primary users of this tool.

This end mill fits standard 0.25 inch collet chucks and tool holders used on vertical machining centers, CNC mills, and manual knee mills. The centercutting geometry allows plunge entry, supporting ramping and helical interpolation strategies without a pre-drilled start hole. The right-hand cut and right-hand spiral flute configuration is the industry-standard orientation compatible with conventional spindle direction on the vast majority of milling machines. Spiral flute geometry and micrograin carbide substrate make this tool a practical choice for slotting, profiling, and pocket milling operations.

Key Features

• 6-flute geometry increases feed rate capability and improves surface finish compared to 4-flute designs
• AlTiN finish provides high-temperature oxidation resistance for dry or near-dry cutting
• 45-degree helix angle promotes efficient chip evacuation and reduces radial cutting pressure
• Centercutting design supports plunge, ramp, and helical entry without a pilot hole
• Micrograin solid carbide substrate delivers rigidity and wear resistance in demanding applications
• Mill diameter tolerance of +0.000 / -0.002 inches supports close-tolerance profiling work

Compatibility

Designed for use in standard 0.25 inch collet systems and end mill holders on CNC vertical machining centers and manual milling machines. No specific OEM system compatibility was stated in the product data.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator with the spindle fully stopped and machine power locked out before tool changes. Seat the shank fully into the collet or holder to the minimum recommended engagement depth and torque the collet nut per the toolholder manufacturer specification. Inspect the cutting edges for chips or damage before each use, and verify runout at the tool tip with a dial indicator after clamping. Do not exceed the tool manufacturer recommended speeds and feeds for the material and operation being performed.