Hertel E2051040 Square End Mill 5/8 in 4 Flute Cobalt

Product Description

The HERTEL E2051040 is a cobalt square end mill built for ferrous and difficult-to-machine materials in milling applications requiring durability and heat resistance. Manufactured from M42 cobalt high-speed steel, this double-end tool measures 0.625 inches in diameter with a 1.375-inch length of cut and a 5-inch overall length. The 4-flute, right-hand spiral configuration with a 30-degree helix angle delivers efficient chip evacuation and smooth cutting action. This end mill is uncoated and non-centercutting, making it suited for peripheral and slot milling rather than plunge operations. It is a regular-length design with a 0.625-inch shank diameter.

This end mill is used in manual mills and CNC machining centers for slotting, side milling, and profiling operations on steel, stainless steel, and other tough alloys. The double-end design extends tool life and provides two usable cutting ends before replacement. Typical applications include job shops, toolrooms, and production environments where cobalt tooling is preferred over carbide for its toughness and resistance to chipping. This is a right-hand cut, right-hand flute tool appropriate for standard spindle rotation on vertical milling machines and machining centers.

Key Features

• M42 cobalt construction for superior heat and wear resistance in tough materials
• Double-end design provides two cutting ends for extended tool life
• 4-flute spiral flute geometry with 30-degree helix for efficient chip removal
• Right-hand cut and right-hand flute for standard milling setups
• Uncoated finish suitable for use with cutting fluids on ferrous materials
• Non-centercutting configuration designed for peripheral and slot milling

Compatibility

Designed as an OEM-style replacement or direct-use cobalt square end mill for standard 5/8-inch shank tool holders and collets on vertical milling machines and CNC machining centers.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Secure the shank fully in a collet or end mill holder to the recommended engagement depth before tightening. Confirm spindle rotation matches the right-hand cut direction before operation. Use appropriate cutting fluid or coolant for the material being machined to maximize tool life and surface finish quality.