Hertel E1039940 Square End Mill 5/8 in 4 Flute Hss

Product Description

The HERTEL E1039940 is a 4-flute square end mill designed for general-purpose milling operations in a wide range of metalworking and machining applications. Built from M7 high speed steel with a bright, uncoated finish, it offers a 5/8 inch cutting diameter, a 1-3/8 inch length of cut, and a 3-3/8 inch overall length. The 30-degree right-hand spiral flute geometry promotes efficient chip evacuation and smooth cutting action. Centercutting capability allows this end mill to plunge directly into workpiece material, expanding its range of use. It is installed and operated by machinists and tool-and-die professionals working with manual or CNC milling equipment.

This end mill is suited for slotting, profiling, contouring, and side milling in ferrous and non-ferrous metals. The 1/2 inch shank diameter fits standard milling chucks, collets, and end mill holders commonly found in vertical and horizontal milling setups. The bright uncoated finish makes it a straightforward choice for general steel and aluminum cutting where specialized coatings are not required. It is appropriate for both job shop and production environments where a reliable, conventional HSS end mill is specified.

Key Features

• M7 high speed steel construction provides toughness and wear resistance in general-purpose milling
• Centercutting design allows direct plunge entry into workpiece material
• 30-degree right-hand helix promotes efficient chip flow and reduced heat buildup
• 4-flute configuration balances material removal rate with surface finish quality
• Bright, uncoated finish suits a broad range of metals without coating-specific limitations
• Right-hand cutting direction compatible with standard milling machine spindle rotation

Compatibility

Designed as an OEM-style replacement or direct-fit end mill for standard milling chucks, ER collets, and end mill holders accepting a 1/2 inch shank diameter. No specific machine model compatibility data was provided by the manufacturer for this SKU.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's toolholder torque and runout specifications. Ensure the milling machine spindle is fully powered down and locked out before inserting or removing the end mill from the holder. Verify shank engagement depth meets the toolholder minimum grip requirement before operation. Do not exceed the recommended depth of cut or feed rate for the workpiece material and machine rigidity.