Accupro 312679 Square End Mill 5/8 in 7 Flute Carbide

Product Description

The ACCUPRO 312679 is a solid carbide square end mill designed for high-performance milling in demanding machining applications. With a 5/8-inch diameter and 7-flute geometry, this tool delivers aggressive metal removal rates while maintaining surface finish quality. The 38-degree helix angle promotes efficient chip evacuation and reduces cutting forces. An AlTiCrN coating provides high-temperature oxidation resistance and extended tool life in abrasive and hard materials. This end mill is a single-end tool with a right-hand cut and right-hand flute direction. It is installed by machinists and CNC operators in production and job-shop environments.

This end mill is suited for milling ferrous metals, hardened steels, and high-temperature alloys where heat generation and tool wear are primary concerns. The 1-5/8-inch length of cut accommodates moderate-depth slotting and peripheral milling operations. The 5/8-inch shank diameter fits standard ER collet chucks, shrink-fit holders, and hydraulic toolholders used on vertical and horizontal machining centers. The Series HS designation indicates it is engineered for high-speed machining strategies with consistent dimensional repeatability across production runs.

Key Features

• 7-flute design increases feed rate capability and improves finish in semi-finishing and finishing passes
• AlTiCrN coating resists heat and wear in hard and abrasive workpiece materials
• 38-degree helix angle promotes smooth chip flow and reduced radial cutting forces
• Micrograin solid carbide substrate provides rigidity and edge retention
• Right-hand cut, right-hand spiral flutes for standard CNC spindle compatibility
• Single-end construction with non-centercutting geometry — not suited for direct plunge operations

Compatibility

Designed as a direct-fit replacement for standard 5/8-inch shank toolholders including ER collet, shrink-fit, and hydraulic chuck systems used on CNC vertical and horizontal machining centers.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator with the spindle fully stopped and machine power isolated before tool changes. Ensure the shank is clean and fully seated to the recommended gauge-line depth in the toolholder before tightening. This tool is not centercutting and must not be used for direct plunge entry into solid material. Verify runout with a dial indicator after installation to confirm proper seating and minimize premature edge wear.