Hertel E1031905 Square End Mill 21/32 in 4 Flute Hss

Product Description

The HERTEL E1031905 is a 4-flute, single-end square end mill manufactured from M7 high speed steel. It carries a 21/32-inch (0.6563 inches) cutting diameter with a 1-5/8-inch (1.625 inches) length of cut and a 5/8-inch shank diameter. The tool features a 30-degree helix angle, right-hand cut, right-hand spiral flute geometry, and an uncoated finish. Weighing 0.3 pounds, it is sized for general milling operations in machine shop and production environments. Machinists and CNC operators working with ferrous and non-ferrous materials install this tool in standard milling machines and machining centers.

This end mill suits peripheral and slot milling applications in light to medium duty cutting scenarios. It is appropriate for use on milling machines, knee mills, and vertical machining centers in job shop and production settings. The 3-3/4-inch overall length provides sufficient reach for most standard workholding setups. Note that this tool is not center-cutting, so it cannot be used for direct plunge entry without a pre-drilled hole or ramping entry strategy. The length of cut range for this tool falls within 1.5 to 2.0 inches.

Key Features

• M7 high speed steel construction for toughness and wear resistance in general machining applications
• 21/32-inch cutting diameter with 1-5/8-inch length of cut
• 4-flute, single-end design with 30-degree helix angle for balanced cutting action
• Right-hand cut and right-hand spiral flute configuration
• Uncoated finish suitable for a wide range of base materials
• Non-center-cutting geometry — ramp or pre-drill entry required for plunge operations

Compatibility

Designed for use in standard 5/8-inch collets, end mill holders, or Weldon-style side-lock holders on conventional and CNC milling machines accepting a 5/8-inch shank diameter.

Installation Notes

Installation is performed by a machinist or toolroom technician following standard toolholding procedures. Ensure the spindle is fully powered down and locked out before changing tooling. Seat the shank fully in the holder and torque the retention mechanism to the holder manufacturer specification. Confirm runout with a test indicator before production cutting, and verify the tool path does not require a plunge entry given this tool is not center-cutting.