Accupro 12182898 Square End Mill 25/64 in 4 Flute Carbide

Product Description

The ACCUPRO 12182898 is a solid carbide square end mill designed for precision milling operations in metal, composites, and other hard materials. Built from micrograin carbide, it delivers consistent edge sharpness and wear resistance across extended production runs. The 4-flute, spiral geometry with a 40-degree helix angle improves chip evacuation and surface finish in both finishing and light roughing passes. At 0.3906 inches in diameter with a 0.6250-inch length of cut, this stub-length tool provides rigidity that minimizes deflection when working in tight tolerances. It is centercutting, allowing plunge entry directly into the workpiece without a pre-drilled hole.

This end mill is suited for CNC machining centers and manual milling machines in production shops, tool rooms, and job shops. Its stub-length configuration makes it a go-to choice when spindle-to-workpiece clearance is limited or when axial rigidity is the priority over reach. Right-hand cut and right-hand flute orientation is standard for conventional spindle setups. The uncoated finish makes it easy to inspect for wear and compatible with regrinding services.

Key Features

• Micrograin solid carbide construction for high edge retention and hardness
• 4-flute spiral geometry with 40-degree helix angle for improved chip flow and surface finish
• Centercutting design enables direct plunge milling without pilot hole
• Stub-length OAL of 2 inches provides maximum rigidity and minimizes deflection
• Right-hand cut, right-hand flute for standard CNC and manual mill spindle compatibility
• Uncoated — easy visual wear inspection and suitable for regrinding

Compatibility

Designed as a standard square end mill replacement for CNC machining centers and manual milling machines using a 7/16-inch collet, end mill holder, or ER-style chuck.

Installation Notes

Installation and tool changes should be performed only with the spindle powered down and locked out per shop safety procedures. Ensure the 7/16-inch shank is fully seated and clamped within the specified runout tolerance of the toolholder to preserve the mill diameter tolerance of +0.000/-0.002 inches. Verify spindle speed and feed rate against published data for the workpiece material before cutting. Inspect the cutting edges for chipping or wear before each use.