Hertel E103901801 Square End Mill 9/32 in 4 Flute Hss

Product Description

The HERTEL E103901801 is a 4-flute, square-end, single-end mill ground from M7 high speed steel and sold uncoated. It carries a 9/32-inch (0.2813-inch) cutting diameter with a 3/4-inch length of cut and mounts on a 3/8-inch straight shank. Overall length is 2.5 inches. The 30-degree right-hand spiral flute geometry promotes efficient chip evacuation while the centercutting design allows plunge entry directly into the workpiece. Machinists and tool-and-die professionals use this mill for slotting, profiling, and pocket milling in ferrous and non-ferrous materials on manual mills and CNC machining centers.

This end mill is suited for general-purpose milling applications in job shops, maintenance environments, and production settings. Its M7 HSS construction provides good toughness and wear resistance at moderate cutting speeds. The uncoated finish makes it a cost-effective choice for lower-speed operations or when re-sharpening is anticipated. Right-hand cut and right-hand flute orientation are standard for conventional spindle setups. Typical applications include contouring, side milling, and full-slot cuts in steel, aluminum, brass, and similar materials.

Key Features

• M7 high speed steel construction for toughness and re-sharpenability
• Centercutting design permits direct plunge cuts without a pre-drilled hole
• 30-degree helix angle promotes smooth chip flow and reduced cutting force
• 4 flutes provide a good balance of chip clearance and surface finish
• Spiral flute geometry for consistent contact and stable cutting action
• Right-hand cut and right-hand flute — compatible with standard spindle rotation

Compatibility

Designed as a general-purpose replacement or working-stock square end mill for standard 3/8-inch collet or end mill holder setups on manual vertical mills and CNC machining centers.

Installation Notes

Installation should be performed by a qualified machinist with the spindle fully stopped and locked out before changing tooling. Seat the shank fully into a properly sized collet or end mill holder and torque the retention mechanism per the tool holder manufacturer specification. Verify runout with a dial indicator before beginning a cut. Do not exceed the recommended depth of cut for the diameter and material combination in use.