Hertel E599924649 Square End Mill 0.1378 in 4 Flute Carbide

Product Description

The HERTEL E599924649 is a solid carbide square end mill designed for precision milling in metalworking and machining applications. With a 0.1378-inch (3.50 mm) cutting diameter and four flutes, it delivers clean, accurate cuts in a compact form factor. The 30-degree helix angle promotes efficient chip evacuation and reduced cutting forces. Built from micrograin solid carbide, this tool offers superior hardness and edge retention compared to high-speed steel alternatives. It features a right-hand cutting direction, centercutting capability for plunge operations, and a standard uncoated finish. Licensed machinists and CNC operators working with small-diameter work will find this tool well-suited for tight-tolerance slotting and profiling work.

This end mill is intended for use in CNC machining centers and manual mills where small-diameter, high-precision cutting is required. Its regular-length geometry and 0.2756-inch (7.00 mm) length of cut make it suitable for shallow slotting, profiling, and finishing passes in ferrous and non-ferrous materials. The 4.00 mm shank diameter fits standard collets and toolholders sized for that bore. Typical applications include die and mold work, fixture fabrication, and precision component machining in job shop and production environments.

Key Features

• 0.1378-inch (3.50 mm) cutting diameter for small-feature precision milling
• Four flutes with 30-degree helix angle for efficient chip removal
• Micrograin solid carbide construction for hardness and edge retention
• Centercutting design allows direct plunge entry into workpiece
• Right-hand cut, uncoated finish, no chipbreaker or variable helix
• Regular-length geometry with 0.2756-inch (7.00 mm) length of cut

Compatibility

Designed for use in standard collet toolholders and end mill holders with a 4.00 mm (approximately 0.1575-inch) shank bore, compatible with CNC machining centers and manual mills configured for small-diameter solid carbide tooling.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before loading or changing tooling. Seat the shank fully in the collet or toolholder and torque the retention nut to the toolholder manufacturer specification. Verify runout with a dial indicator before commencing a cut, as excessive runout at this diameter can cause premature tool breakage.