Value Collection 723-3940 Square End Mill 6 Flute Cobalt

Product Description

The VALUE COLLECTION 723-3940 is a cobalt square end mill designed for material removal in milling operations on machining centers and manual knee mills. Built from M42 cobalt high-speed steel, this single-end tool features a 1.625-inch cutting diameter and a 6-flute spiral configuration with a 30-degree helix angle. The bright uncoated finish is suited for general-purpose milling where coating adhesion or heat buildup is not a primary concern. Machinists and toolroom operators use this end mill for face milling, slotting, and peripheral cuts across a range of ferrous and non-ferrous workpiece materials.

This end mill fits standard milling applications in job shop, production, and maintenance environments. The 3/4-inch shank diameter is compatible with common end mill holders, collet chucks, and Weldon-style tool holders found in most shop setups. With a 2-inch length of cut and 4.5-inch overall length, this tool is configured for regular-reach applications rather than deep-pocket or extended-reach work. Center-cutting capability allows direct plunge entry into the workpiece without pre-drilling. Right-hand cutting and right-hand flute direction follow standard industry orientation.

Key Features

• M42 cobalt HSS construction for improved heat and wear resistance compared to standard M2 HSS
• 6-flute design increases feed rate potential and improves surface finish versus fewer-flute alternatives
• 30-degree helix angle promotes smooth chip evacuation and reduced cutting forces
• Center-cutting geometry allows plunge milling without a pilot hole
• Bright uncoated finish suited for general-purpose applications and easy tool condition inspection
• Single-end configuration with right-hand cut and right-hand spiral fluting

Compatibility

Designed as a general-purpose square end mill for use with standard 3/4-inch end mill holders, ER collet chucks, and Weldon-style tool holders on vertical and horizontal milling machines and machining centers.

Installation Notes

Installation should be performed by a qualified machinist following shop-standard tooling procedures. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Verify the tool holder bore and collet size match the 0.750-inch shank diameter before seating the tool. Confirm runout with a dial indicator after clamping to avoid premature tool wear or workpiece damage.