Hertel E8031909 Square End Mill 3/4 in 4 Flute Hss Tin

Product Description

The HERTEL E8031909 is a 4-flute square end mill designed for general-purpose milling operations in a wide range of ferrous and non-ferrous materials. It features a 3/4-inch cutting diameter, a 1-5/8-inch length of cut, and a 5/8-inch shank diameter, giving it a rigid, well-proportioned geometry for slotting, profiling, and peripheral milling. The tool is manufactured from M7 high speed steel and carries a titanium nitride (TiN) finish that increases surface hardness and extends tool life compared to uncoated HSS tooling. The 30-degree right-hand spiral flute design promotes efficient chip evacuation and smooth cutting action. Overall length is 3-3/4 inches, placing it in the regular-length category for standard reach applications.

This end mill is suited for machining operations on manual knee mills, CNC vertical machining centers, and bridgeport-style machines where an HSS tool is preferred over carbide. Typical applications include side milling, slotting, and light profiling cuts in mild steel, aluminum, brass, and plastics. The non-centercutting design means it is not intended for direct plunge cuts; entry should be made via ramping or pre-drilled holes. It is packaged and sold individually as a single unit.

Key Features

• 3/4-inch cutting diameter with 1-5/8-inch length of cut for regular-reach slotting and profiling
• M7 high speed steel construction provides toughness and resistance to edge chipping
• TiN coating increases surface hardness and reduces friction for extended tool life
• 4-flute configuration balances chip clearance with surface finish quality
• 30-degree right-hand spiral flute promotes positive chip evacuation
• Non-centercutting geometry — not intended for direct plunge entry

Compatibility

Designed as a standard replacement or production end mill compatible with ER, R8, CAT, BT, and other common milling machine toolholders accepting a 5/8-inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the machine spindle is fully powered down and locked out before loading or removing the tool from the holder. Secure the shank to the minimum recommended engagement depth specified by the toolholder manufacturer. Verify runout with a dial indicator before commencing cuts to prevent premature edge wear.