Accupro 313439 Square End Mill 3/4 in 2 Flute Solid Carbide

Product Description

The ACCUPRO 313439 is a solid carbide square end mill designed for precision milling operations in ferrous and non-ferrous materials. Built from micrograin solid carbide, it delivers rigidity and wear resistance suited to high-demand cutting environments. The 3/4 inch diameter cutting edge runs a 1-5/8 inch length of cut with a 45-degree helix angle, promoting efficient chip evacuation and reduced cutting forces. At 4 inches overall length with a matching 3/4 inch shank diameter, this tool mounts directly in standard ER or end mill holders. The bright/uncoated finish makes it a general-purpose workhorse for shops running dry or with cutting fluid. Machinists, tool-and-die makers, and CNC operators across job shops and production floors are the primary users.

This end mill is suited for slotting, profiling, and peripheral milling on machining centers and manual knee mills. Its 2-flute geometry provides wider chip gullets, making it particularly effective in softer materials and applications where chip clearance is a priority. The right-hand cut and right-hand spiral flute direction match conventional spindle rotation on standard vertical and horizontal machining centers. The centercutting capability allows plunge entry directly into the workpiece without a pre-drilled pilot hole.

Key Features

• Micrograin solid carbide construction for extended tool life and dimensional stability
• 45-degree helix angle promotes smooth cutting action and efficient chip flow
• 2-flute design provides maximum chip clearance for softer materials and slotting operations
• Centercutting geometry allows direct plunge milling without a starter hole
• Bright/uncoated finish compatible with dry cutting and most cutting fluids
• Mill diameter tolerance of +0.000/-0.002 inches and shank tolerance of +0.0001/-0.0004 inches for precise fitment

Compatibility

Designed as an OEM-style solid carbide square end mill fitting standard 3/4 inch end mill holders, collet chucks, and ER collet systems on CNC machining centers and manual mills.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the machine spindle is fully stopped and locked out before tool changes. Seat the shank fully into the holder to the recommended grip depth before torquing the retention hardware to the tool holder specification. Inspect the shank and collet bore for contamination or damage before each setup to maintain runout tolerances.