Hertel E107201601 Square End Mill 1/4 in 2 Flute Hss

Product Description

The HERTEL E107201601 is a 2-flute square end mill designed for general milling operations including slotting, profiling, and peripheral milling. Manufactured from M7 high speed steel with a bright/uncoated finish, this extra-long tool offers a 1/4 inch cutting diameter and a 1-3/4 inch length of cut. The 42-degree right-hand helix promotes efficient chip evacuation and smooth cutting action. Center-cutting geometry allows plunge entry, giving the operator flexibility in approach strategies. Intended for installation and use by machinists and tooling technicians working with manual mills, CNC knee mills, and light-duty CNC machining centers.

This end mill is suited for machining ferrous and non-ferrous materials in applications that require extended reach into deep pockets, slots, or stepped features. The extra-long overall length of 3-9/16 inches allows the tool to reach areas inaccessible to standard-length end mills without requiring special extensions. The right-hand flute direction and single-end configuration make it a straightforward drop-in for conventional end mill holders and collet chucks accepting a 3/8 inch shank diameter.

Key Features

• M7 high speed steel construction for wear resistance in general machining applications
• 42-degree right-hand helix angle for efficient chip flow and reduced cutting force
• Center-cutting capable — supports direct plunge entry into workpieces
• Extra-long classification with 3-9/16 inch overall length for deep-reach applications
• Bright/uncoated finish suitable for use with cutting fluids across a range of materials
• Spiral flute type with right-hand cutting direction for standard milling setups

Compatibility

Designed for use in any end mill holder or collet chuck that accepts a 3/8 inch shank diameter. Fits standard ER, TG, and DA collet systems as well as Weldon-style side-lock holders machined for a 3/8 inch straight shank.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Ensure the machine spindle is fully stopped and locked out before inserting or removing the tool. Confirm the collet or holder bore matches the 3/8 inch shank diameter and that the tool is seated to the minimum engagement depth recommended by the holder manufacturer. Inspect the cutting edges and shank for damage before each use; do not run a chipped or bent end mill.