Hertel E104304802 Square End Mill 3/4 in Hss 3 Flute

Product Description

The HERTEL E104304802 is a single-end, square-profile end mill designed for general-purpose milling operations in ferrous and non-ferrous materials. Built from high speed steel (HSS), it features a 0.75-inch cutting diameter, a 1.625-inch length of cut, and a 0.500-inch shank diameter, with an overall length of 3.625 inches. The three-flute geometry balances chip evacuation with rigidity, making it well suited for slotting, profiling, and peripheral milling in manual machines and CNC machining centers. The uncoated finish allows for easy regrinding, and the centercutting design enables direct plunge entry without a pre-drilled pilot hole.

This end mill is used in job shops, tool rooms, and maintenance machining environments where versatility and regrindability are priorities. The 0.500-inch shank fits standard R8, ER, Weldon, and similar toolholders common in vertical mills and CNC machining centers. The 3-flute configuration is a practical choice for aluminum and softer alloys where chip clearance matters, while still performing in mild steel at appropriate feeds and speeds. No variable helix, variable index, or chipbreaker geometry is present, keeping the tool profile straightforward for general work.

Key Features

• 0.750-inch cutting diameter with 1.625-inch length of cut for slotting and profiling passes
• High speed steel construction supports regrinding and use with cutting oils in manual or lower-speed CNC applications
• Centercutting design allows direct plunge milling without a pilot hole
• 3-flute geometry balances chip clearance and cutting edge strength
• 0.500-inch straight shank fits widely available toolholding systems
• Uncoated surface finish — no coating loss during regrind cycles

Compatibility

Designed as a standard single-end square end mill compatible with any toolholder accepting a 0.500-inch straight shank, including R8 collets, ER collet chucks, and Weldon-style end mill holders used on vertical knee mills and CNC machining centers.

Installation Notes

Installation is performed by a machinist or toolroom technician. Secure the shank in a clean, undamaged toolholder to the manufacturer-specified torque range for that holder type. Ensure the machine spindle is fully stopped and locked out before changing or adjusting tooling. Inspect the cutting edges for chips or wear before each use, and apply cutting fluid appropriate to the workpiece material to extend tool life.