Hertel E199921325 Square End Mill 7/16 in 4 Flute Hss

Product Description

The HERTEL E199921325 is a double-end, four-flute square end mill designed for general-purpose milling in ferrous and non-ferrous materials. Built from high speed steel (HSS) with a bright, uncoated finish, it delivers reliable performance in drilling, slotting, and peripheral milling operations. The cutting diameter measures 7/16 inches with a 1-inch length of cut, mounted on a 1/2-inch shank. A 30-degree helix angle promotes efficient chip evacuation and smooth cutting action. The tool is centercutting, allowing plunge cuts without a pre-drilled pilot hole. Machinists and toolroom operators rely on this geometry for versatile, everyday material removal tasks.

This end mill suits standard vertical and horizontal milling machine setups found in job shops, maintenance environments, and production toolrooms. The double-end configuration provides two usable cutting ends, extending tool life between changes. Right-hand cut and right-hand spiral flute direction are standard for conventional CNC and manual mill spindles. The 4-1/2-inch overall length provides adequate reach for most common workpiece setups without sacrificing rigidity.

Key Features

• Double-end design with two usable cutting ends for extended service life
• Centercutting geometry allows direct plunge entry into workpiece material
• 30-degree helix angle promotes efficient chip flow and reduced cutting forces
• High speed steel construction provides toughness across a broad range of materials
• Bright, uncoated finish maintains sharp edge geometry without coating buildup
• Right-hand cut and right-hand spiral flute compatible with standard mill spindle rotation

Compatibility

Designed as an OEM-style replacement or direct-fit tooling option for standard 1/2-inch collets and end mill holders used on vertical knee mills, CNC machining centers, and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Always power down and lock out the spindle before changing tooling. Secure the shank fully in a matched collet or end mill holder to the recommended engagement depth before tightening. Verify spindle rotation direction matches the right-hand cut specification of this tool before initiating a cut.