Accupro 12181398 Square End Mill 23/64 in 2 Flute Carbide

Product Description

The ACCUPRO 12181398 is a solid carbide square end mill designed for precision milling in metal, composite, and hard material applications. With a 23/64 inch (0.3594 inch) mill diameter and a 2-flute, right-hand spiral flute geometry at a 40-degree helix angle, it delivers efficient chip evacuation and clean edge finishes in a variety of cutting operations. The centercutting design allows plunge entry as well as conventional peripheral milling. Manufactured from micrograin solid carbide and supplied uncoated, this tool is suited for machinists and tool-and-die professionals who need consistent dimensional control in tight-tolerance work.

This end mill fits standard milling machine spindles and CNC machining centers that accept a 3/8 inch shank. With a 7/8 inch length of cut and a 2-1/2 inch overall length, it is sized for regular-reach slotting, profiling, and contouring cuts. The right-hand cut and right-hand flute configuration is the conventional setup for most vertical milling operations. No extended reach or chipbreaker features are present, keeping the geometry straightforward for general-purpose material removal tasks in job shop and production environments.

Key Features

• Centercutting geometry allows both plunge and peripheral milling without a pre-drilled entry hole
• 40-degree helix angle promotes smooth chip flow and reduces cutting forces on the workpiece
• Micrograin solid carbide construction provides rigidity and wear resistance in demanding cuts
• Uncoated finish offers consistent performance and simplifies re-sharpening
• Mill diameter tolerance of +0.000 / -0.002 inches supports close-tolerance slotting and profiling
• Right-hand cut, right-hand flute — standard orientation for most milling setups

Compatibility

Designed as a direct-fit replacement or standard tooling selection for milling machines and CNC machining centers with 3/8 inch collet or end-mill holders. Suitable for general-purpose milling applications where a regular-length, 2-flute square end mill is specified.

Installation Notes

Installation should be performed by a qualified machinist following established toolholding procedures. Ensure the spindle is fully de-energized and locked out before changing tooling. Seat the shank fully in the collet or end-mill holder to the recommended engagement depth and torque the retention hardware per the toolholder manufacturer specifications. Verify runout with a dial indicator before beginning production cuts to confirm proper seating and avoid premature tool wear.