Hertel E899921248 Square End Mill 11/64 in 2 Flute Hss Tin

Product Description

The HERTEL E899921248 is a single-end square end mill designed for general-purpose milling operations in metal fabrication and machining environments. It features an 11/64-inch (0.1719-inch decimal) cutting diameter and a 7/16-inch (0.4375-inch) length of cut, making it well suited for slotting, profiling, and peripheral milling in tight geometries. Constructed from high speed steel and finished with a titanium nitride (TiN) coating, it offers improved surface hardness and wear resistance compared to uncoated HSS tooling. This end mill is installed and operated by machinists and CNC operators working in job shops, toolrooms, and production machining environments.

This end mill is appropriate for use in vertical machining centers, manual knee mills, and CNC milling machines handling ferrous and non-ferrous materials at moderate cutting speeds. The 3/8-inch shank diameter fits standard collet chucks and end mill holders commonly found in light to mid-duty milling setups. The 2-flute configuration supports chip evacuation in slotting and plunge applications, while the 30-degree right-hand spiral flute promotes efficient cutting action and reduced chatter during profiling passes.

Key Features

• 11/64-inch (0.1719-inch) cutting diameter with 7/16-inch length of cut
• 2-flute, right-hand spiral design with 30-degree helix angle for efficient chip evacuation
• High speed steel construction for toughness across a range of workpiece materials
• Titanium nitride (TiN) coating for increased surface hardness and extended tool life
• Centercutting geometry allows direct plunge entry into workpiece material
• 3/8-inch shank diameter for compatibility with standard collet and end mill holder systems
• Single-end design with 2-3/8-inch overall length

Compatibility

Designed as an OEM-style replacement or standard tooling option for milling machines accepting a 3/8-inch straight shank end mill in collet chucks or end mill holders.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the machine spindle is fully stopped and the tool holder is clean and free of debris before seating the shank. Secure the end mill to the manufacturer-specified torque range for the collet or set-screw holder in use. Follow applicable shop safety protocols and machine guarding requirements when operating rotating cutting tools.