Hertel E8050020 Square End Mill 5/16 in 2 Flute Hss Tin

Product Description

The HERTEL E8050020 is a double-end, square-profile end mill designed for milling ferrous and non-ferrous materials in general machining applications. It is manufactured from M7 high speed steel and carries a titanium nitride (TiN) finish that extends tool life and reduces friction during cutting. The cutter measures 5/16 inch in diameter with a 9/16 inch length of cut, a 3/8 inch shank diameter, and an overall length of 3-1/8 inches. The two-flute spiral geometry and 30-degree helix angle promote efficient chip evacuation. Right-hand cut and right-hand flute orientation are standard. This tool is installed by machinists and tool-and-die professionals operating vertical mills, CNC machining centers, and manual knee mills.

The E8050020 suits applications where a center-cutting end mill is required for plunge entry, slotting, profiling, and peripheral milling. The double-end configuration provides a second usable cutting end, extending the value of each tool. The 30-degree helix and spiral flute design are well suited to moderate-to-hard steels, alloy steels, and similar materials common in job-shop and maintenance machining environments. The 3/8 inch shank fits standard R8 collets, end mill holders, and side-lock holders commonly found in manual and CNC mill setups.

Key Features

• Double-end design provides two cutting ends per tool
• Center-cutting geometry allows direct plunge entry into workpiece
• TiN coating reduces friction and extends tool life versus uncoated HSS
• M7 high speed steel construction for toughness in interrupted cuts
• 30-degree helix spiral flute promotes chip evacuation and smooth cutting action
• Right-hand cut, right-hand flute — compatible with standard spindle rotation on most mills

Compatibility

Designed as a standard-shank replacement end mill for use in any mill spindle, collet chuck, or end mill holder accepting a 3/8 inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist. Ensure the machine spindle is fully stopped and the power is locked out before changing tooling. Seat the shank fully into the collet or holder to the recommended engagement depth and torque the drawbar or set screws according to the holder manufacturer specifications. Inspect the TiN coating and cutting edges before use — do not run a chipped or damaged end mill.