Hertel E299914086 Square End Mill 5/32 in 2 Flute Cobalt

Product Description

The HERTEL E299914086 is a cobalt square end mill designed for precision milling operations in metalworking and machining environments. Built from M42 cobalt high-speed steel, it delivers improved heat and wear resistance compared to standard HSS tooling. The cutter measures 0.1563 inches (5/32 inch) in diameter with a 0.625 inch length of cut and a 3/8 inch shank diameter. Overall length is 2.375 inches (2-3/8 inches). With a 30-degree helix angle and two spiral flutes, this end mill is suited for slotting, profiling, and light roughing passes on ferrous and non-ferrous materials. It is uncoated and ships ready for use.

This end mill is intended for use in vertical machining centers, knee mills, and manual or CNC milling machines. It is a single-end, right-hand cut tool with right-hand flute direction, making it compatible with standard spindle rotation. The centercutting design allows plunge milling in addition to peripheral and slot milling. Typical users include machining shops, tool and die operations, and maintenance machinists working with steel, stainless steel, cast iron, and similar materials. The 3/8 inch shank fits standard collets and end mill holders common in light-duty to mid-range milling setups.

Key Features

• M42 cobalt construction for improved heat resistance and tool life over standard HSS
• 30-degree helix angle promotes smooth chip evacuation during slotting and profiling
• Centercutting geometry enables plunge cuts without a pre-drilled entry hole
• Right-hand cut, right-hand flute — compatible with standard spindle rotation
• Uncoated finish suitable for use with cutting fluids on a wide range of ferrous metals
• Two-flute design maximizes chip clearance in softer steels and gummy materials

Compatibility

Designed as a standard replacement or production end mill for milling machines accepting a 3/8 inch shank in collet chucks or end mill holders.

Installation Notes

Installation should be performed by a qualified machinist following shop safety protocols. Ensure the spindle is fully stopped and power is locked out before changing tooling. Seat the shank fully into the collet or holder to the minimum engagement depth recommended for the holder type, and torque the retention hardware per the tool holder manufacturer specification. Verify runout with a dial indicator before beginning a cut to avoid premature tool wear or workpiece damage.