Hertel E199921255 Square End Mill 13/64 in 2 Flute Hss

Product Description

The HERTEL E199921255 is a 2-flute square end mill designed for general-purpose milling operations in a wide range of metalworking applications. Ground from high speed steel (HSS) with a bright, uncoated finish, this end mill features a 30-degree right-hand helix and centercutting geometry, allowing it to plunge directly into the workpiece in addition to peripheral and slot milling. The 13/64 inch (0.2031 inch) cutting diameter, combined with a 7/16 inch length of cut and 3/8 inch shank diameter, makes it well suited for light-duty profiling, slotting, and pocketing in steel, aluminum, and similar machinable materials.

This end mill is intended for use in CNC machining centers, manual knee mills, and benchtop milling machines where a small-diameter, short-flute tool is required. The 2-flute configuration promotes chip evacuation in slotting cuts and soft materials. With a 2-7/16 inch overall length and standard 3/8 inch shank, it fits collets and end mill holders common in most light industrial and toolroom setups. Machinists and toolroom operators in job shops, maintenance departments, and production facilities will find this a reliable single-piece replacement tool.

Key Features

• Centercutting design allows plunge milling without a pre-drilled entry point
• 30-degree right-hand spiral helix promotes smooth chip flow and reduced chatter
• High speed steel construction provides toughness and regrindability
• 2-flute geometry improves chip clearance in slotting and soft-material cuts
• Bright, uncoated finish suitable for use with cutting fluids on a broad range of materials
• Right-hand cutting direction compatible with standard spindle rotation

Compatibility

Designed as an OEM-style replacement or toolroom-stock end mill for use in any milling machine or machining center equipped with a 3/8 inch collet or end mill holder accepting straight-shank tooling.

Installation Notes

Installation should be performed by a qualified machinist following shop safety protocols. Ensure the machine spindle is fully stopped and the drawbar or collet nut is torqued with the appropriate wrench before beginning any cut. Confirm tool runout with a dial indicator after seating to avoid premature edge wear. Always apply appropriate cutting fluid or coolant for the workpiece material and observe recommended speeds and feeds for HSS tooling.