Hertel GG042980 Square End Mill 1 in 6 Flute Hss

Product Description

The HERTEL GG042980 is a single-end square end mill designed for general-purpose milling operations in metal fabrication and machining environments. Ground from M7 high speed steel, this tool handles slotting, profiling, and peripheral milling on ferrous and non-ferrous materials. It features a 1 inch cutting diameter, a 3 inch length of cut, and a 30-degree right-hand spiral helix across 6 flutes. The bright, uncoated finish is standard for M7 HSS tooling. It is center-cutting, allowing plunge entry. Machinists and tool-and-die professionals are the primary users of this tool in manual mills and CNC machining centers.

This end mill is suited for roughing and semi-finishing passes in shop environments where high speed steel tooling is preferred over carbide. The 6-flute geometry provides a higher number of cutting edges, which improves surface finish on finishing passes and supports higher feed rates in light cuts. The regular-length designation and 1 inch shank diameter make it a direct fit for standard milling chucks, collets, and end mill holders used in knee mills and vertical machining centers.

Key Features

• 1 inch cutting diameter with matching 1 inch shank diameter for secure toolholder engagement
• 3 inch length of cut handles deep slots and pockets without extension tooling
• 6 flutes for improved surface finish and higher feed-rate capability on finishing passes
• M7 high speed steel construction provides good wear resistance and toughness
• Center-cutting design permits plunge milling and ramping operations
• 30-degree right-hand helix reduces chatter and improves chip evacuation
• Bright, uncoated finish — compatible with cutting fluids and oils standard in HSS tooling applications

Compatibility

Designed as a standard-shank square end mill for use in any milling machine equipped with a 1 inch end mill holder, collet chuck, or Weldon-style holder accepting a 1 inch shank.

Installation Notes

Installation is performed by a machinist or toolroom professional. Ensure the machine spindle is fully stopped and locked before changing tooling. Seat the shank fully into the holder and verify set-screw or collet torque per the toolholder manufacturer specification. Confirm runout at the cutting diameter with a dial indicator before taking the first cut.