Hertel E899921310 Square End Mill 0.75in 2 Flute Hss Tin

Product Description

The HERTEL E899921310 is a square end mill designed for general-purpose milling operations in metal removal and contouring applications. Manufactured from high speed steel (HSS) and finished with a titanium nitride (TiN) coating, this tool delivers improved surface hardness and wear resistance compared to uncoated HSS. The 0.75-inch cutting diameter, 2-flute geometry, and 30-degree right-hand spiral helix make it well suited for slotting, profiling, and peripheral milling in a wide range of ferrous and non-ferrous materials. The centercutting design allows direct plunge entry. This end mill is a single-end tool installed by machinists and toolroom technicians in manual mills, knee mills, and CNC machining centers.

This end mill fits standard 0.75-inch collet chucks, end mill holders, or set-screw-style tool holders used in vertical milling machines and machining centers. It is appropriate for light-to-medium material removal in job shop, maintenance, and production environments. The 1.3125-inch length of cut accommodates moderate-depth passes without excessive tool deflection. Overall length of 3.875 inches suits most standard toolholding setups.

Key Features

• 0.75-inch cutting diameter with matching 0.75-inch shank for direct holder compatibility
• 2-flute geometry promotes chip clearance in slotting and plunge operations
• 30-degree right-hand spiral helix provides smooth cutting action and efficient chip evacuation
• Titanium nitride (TiN) coating extends tool life and reduces friction at the cutting edge
• Centercutting construction enables direct plunge entry without pre-drilling
• High speed steel construction offers toughness and regrindability

Compatibility

Designed for use in any milling machine or machining center equipped with a standard 0.75-inch collet, end mill holder, or set-screw tool holder.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Ensure the spindle is fully stopped and the machine is locked out before changing tooling. Seat the shank fully into the holder to the recommended engagement depth and torque set screws or collet nuts per the tool holder manufacturer specifications. Verify runout with a dial indicator before beginning cuts, as excessive runout will reduce tool life and surface finish quality.