Accupro 12182520 Square End Mill 11/32 in 4 Flute Carbide

Product Description

The ACCUPRO 12182520 is a solid carbide square end mill designed for precision milling operations in metal, composites, and other hard materials. Built from micrograin carbide, this single-end tool runs a 4-flute, spiral-flute geometry with a 40-degree helix angle and right-hand cut with right-hand flute direction. The 11/32 inch (0.3438 inch) cutting diameter and 7/8 inch length of cut make it well-suited for slotting, profiling, and finishing passes where tight tolerances and clean edge quality are required. It is centercutting, allowing direct plunge entry without a pre-drilled starting hole. Licensed machinists and CNC toolroom technicians are the primary users of this tool.

This end mill fits standard milling applications in toolrooms, production machining cells, and job shops. The 3/8 inch shank diameter is compatible with common collet chucks and end mill holders found on vertical machining centers and manual knee mills. The 2-1/2 inch overall length keeps the tool rigid in the spindle, reducing deflection during cuts. The uncoated finish makes it a practical choice for applications where re-sharpening is a priority or where coatings are not required by the material being cut.

Key Features

• Micrograin solid carbide construction for wear resistance and edge retention
• 4-flute spiral geometry with 40-degree helix angle for efficient chip evacuation
• Centercutting design allows direct plunge milling without a pilot hole
• Right-hand cut and right-hand flute direction for standard spindle rotation
• Mill diameter tolerance of +0.000 / -0.002 inches for consistent fit and finish
• Uncoated surface suitable for re-sharpening and select material applications

Compatibility

Designed for use with standard 3/8 inch collet chucks and end mill holders on CNC vertical machining centers and manual milling machines. Confirm holder compatibility and runout specifications before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is in an energy-isolated state before changing tooling. Seat the shank fully into the collet or holder to the recommended gauge depth and torque the retention mechanism according to the toolholder manufacturer specifications. Inspect the cutting edges for chips or damage before each use.