Hertel EF99921305 Square End Mill 5/8 in 2 Flute Hss Ticn

Product Description

The HERTEL EF99921305 is a square end mill designed for metal removal and contouring operations in milling applications. Built from high speed steel (HSS) with a titanium carbonitride (TiCN) finish, this tool offers surface hardness and lubricity suitable for machining a range of ferrous and non-ferrous materials. It features a 5/8 inch cutting diameter, a 1-5/16 inch length of cut, and a 3-3/4 inch overall length. The two-flute spiral design with a 30-degree helix angle promotes efficient chip evacuation in slotting and profiling cuts. Centercutting geometry allows plunge entry directly into the workpiece. Machinists and tool-and-die professionals are the primary users.

This end mill is suited for use on CNC machining centers, knee mills, and manual milling machines in job shop, production, and maintenance environments. The right-hand cut and right-hand flute configuration is standard for conventional and climb milling on vertical spindle machines. The 5/8 inch shank diameter matches common collet and end mill holder sizes. It is appropriate for slotting, peripheral milling, and profiling operations on steel, cast iron, aluminum, and similar materials where HSS tooling is specified.

Key Features

• High speed steel construction for durability across a broad range of workpiece materials
• TiCN coating increases surface hardness and reduces friction at the cutting edge
• Two-flute spiral design with 30-degree helix angle for effective chip clearance
• Centercutting capability allows direct plunge cuts without pre-drilling
• Right-hand cut and right-hand flute for standard milling spindle compatibility
• Matched shank and cutting diameter at 5/8 inch for straightforward toolholding

Compatibility

Designed as a standard-shank square end mill compatible with 5/8 inch collets, end mill holders, and milling chucks used on vertical and horizontal milling machines.

Installation Notes

Installation should be performed by a qualified machinist with the machine spindle fully stopped and locked out per applicable safety procedures. The shank should be inserted to the full recommended engagement depth in the toolholder and secured with the appropriate wrench to the holder manufacturer torque guidance. Inspect the collet or holder for wear before use. Verify spindle speed and feed rate against published HSS tooling charts for the workpiece material before initiating a cut.