Hertel EF99921327 Square End Mill 1/2 in 4 Flute Hss Ticn

Product Description

The HERTEL EF99921327 is a double-end square end mill designed for precision milling operations in metal and alloy workpieces. Manufactured from high speed steel (HSS) with a titanium carbonitride (TiCN) coating, this tool delivers extended wear resistance and improved surface finishes compared to uncoated HSS. It features a 1/2 inch mill diameter, a 1 inch length of cut, and four spiral flutes with a 30-degree helix angle. The double-end configuration doubles usable tool life before replacement. This end mill is a standard choice for machinists and toolmakers performing slotting, profiling, and peripheral milling on manual and CNC machine tools.

This end mill is suited for shops handling general-purpose milling on carbon steel, alloy steel, stainless steel, cast iron, and non-ferrous materials. The TiCN coating reduces friction and resists built-up edge, making it appropriate for moderate-speed cutting applications. The right-hand cut and right-hand flute direction are standard for conventional milling setups. At 4.5 inches overall length with a 1/2 inch shank diameter, it fits standard end mill holders, collets, and milling chucks used on knee mills and CNC machining centers.

Key Features

• Double-end design provides two usable cutting ends, extending tool life
• TiCN coating improves wear resistance and reduces friction versus uncoated HSS
• 4 spiral flutes with 30-degree helix angle for efficient chip evacuation
• Center-cutting capable, allowing plunge entry into the workpiece
• Right-hand cut and right-hand flute direction for standard milling setups
• 1/2 inch shank diameter compatible with common end mill holders and collets

Compatibility

Designed as an OEM-style replacement or direct-use end mill for standard 1/2 inch end mill holders, ER collet chucks, and milling chucks used on manual knee mills and CNC vertical machining centers.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and locked out before installing or removing the end mill from its holder. Verify that the collet or end mill holder is clean and free of chips or debris before seating the shank. Follow machine tool manufacturer torque recommendations for drawbar and collet nut tightening, and confirm tool runout with a dial indicator before beginning production cuts.