Hertel E107001601 Square End Mill 1/4 in 2 Flute Hss

Product Description

The HERTEL E107001601 is a two-flute, high speed steel square end mill designed for general-purpose milling operations in metal, plastic, and composite materials. It features a 0.25 inch cutting diameter, a 0.625 inch length of cut, and a 0.375 inch shank diameter, with a 2.5 inch overall length that fits standard toolholders on knee mills, bed mills, and CNC machining centers. The 42-degree helix angle promotes efficient chip evacuation and smooth cutting action. The uncoated M7 HSS construction suits applications where regrinding is preferred over coated carbide. Machinists, tool-and-die makers, and general machine shop personnel are the primary users of this tool.

This end mill is suited for light to medium-duty slotting, peripheral milling, and plunge cutting in a range of workpiece materials. The centercutting geometry allows direct plunge entry without a pre-drilled hole. The right-hand cut, right-hand spiral flute configuration is compatible with standard spindle rotation on vertical milling machines. The regular-length profile makes it a versatile choice for everyday shop work where extended reach is not required.

Key Features

• 0.25 inch cutting diameter with 0.625 inch length of cut for standard slot and pocket work
• M7 high speed steel grade offers good toughness and regrindability
• 42-degree helix angle for efficient chip flow and reduced cutting force
• Centercutting design allows direct plunge entry into the workpiece
• Right-hand cut, right-hand spiral flute — compatible with conventional vertical mill spindles
• Uncoated finish makes regrinding straightforward with standard HSS grinding wheels

Compatibility

Designed as a standard single-end square end mill for use in any toolholder accepting a 0.375 inch shank diameter, including collet chucks, end mill holders, and Weldon-style holders on vertical milling machines and CNC machining centers.

Installation Notes

Installation is performed by a machinist or toolroom technician. Ensure the machine spindle is fully stopped and the drawbar or toolholder is properly torqued before engaging the workpiece. Secure the 0.375 inch shank with adequate clamping length in the holder to minimize runout and tool pullout risk. Inspect the cutting edges for chips or wear before each use, and confirm correct spindle rotation direction matches the right-hand cut geometry of this tool.