Hertel E299921148 Square End Mill 15/64 in 2 Flute Hss

Product Description

The HERTEL E299921148 is a single-end square end mill designed for precise milling operations in metal fabrication and machining environments. Built from M42 high speed steel with a bright, uncoated finish, this tool delivers consistent performance in general-purpose cutting applications. It features a 15/64 inch (0.2344 inch) mill diameter, a 1/2 inch length of cut, and a 3/8 inch shank diameter. The 30-degree right-hand helix promotes efficient chip evacuation, while the two-flute geometry provides adequate chip clearance for slotting and profiling cuts. This end mill is installed and used by machinists and tool-and-die professionals working with manual mills and CNC machining centers.

This end mill is suited for light to medium milling tasks including slotting, profiling, and step milling in ferrous and non-ferrous materials. The 2.4375 inch overall length provides adequate reach for standard setups. The bright, uncoated finish makes it appropriate for use in lower-heat applications or where coolant is applied. Its center-cutting capability allows it to plunge directly into material without a pre-drilled entry point, adding versatility across a range of job-shop and production machining scenarios.

Key Features

• M42 high speed steel construction for durability in general-purpose machining
• Center-cutting design allows direct plunge entry into workpiece material
• 30-degree right-hand helix promotes efficient chip evacuation during cutting
• Two-flute geometry provides maximum chip clearance in slotting operations
• Bright, uncoated finish suitable for use with cutting fluids or coolant
• Right-hand cutting direction compatible with standard spindle rotation

Compatibility

Designed as a standard shank end mill for use in collet chucks, end mill holders, or milling machine spindles accepting a 3/8 inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Secure the shank fully within the tool holder to the recommended engagement depth for your holder type, leaving no less than the minimum shank engagement to prevent pullout. Follow machine manufacturer guidelines and applicable shop safety procedures when setting tool length offsets and spindle speeds.