Hertel E1030920 Square End Mill 1-1/8 in 2 Flute Hss

Product Description

The HERTEL E1030920 is a single-end, square-profile end mill designed for general-purpose milling operations across a range of ferrous and non-ferrous materials. Built from M7 high speed steel with a bright, uncoated finish, this tool delivers reliable cutting performance without the added cost of a coating. It features a 1.125-inch mill diameter, a 1.625-inch length of cut, and a 30-degree right-hand spiral helix. The 2-flute geometry promotes efficient chip evacuation, making it well-suited for slotting and peripheral milling where chip clearance is a priority. Licensed machinists, toolmakers, and CNC setup technicians are the primary users.

This end mill fits standard milling machine spindles and CNC machining centers that accept a 0.75-inch shank diameter. It is center-cutting, allowing plunge entry directly into the workpiece. The 30-degree helix angle provides a good balance between cutting action and edge strength for medium-to-hard steels, cast iron, and general shop work. Overall length is 3.875 inches, placing it in the standard reach category with no extended-reach geometry. It is suited for vertical milling, knee mills, and 3-axis CNC operations where a conventional 2-flute HSS tool meets the application requirements.

Key Features

• M7 high speed steel construction for durability in ferrous and general-purpose milling
• Bright, uncoated finish — no coating degradation risk, easy to resharpen
• Center-cutting design allows direct plunge entry without pre-drilling
• 30-degree right-hand spiral helix for balanced chip flow and cutting force
• 2-flute configuration maximizes chip clearance in slotting and deep-pocket operations
• Right-hand cutting direction compatible with standard spindle rotation

Compatibility

Designed as a standard single-end square end mill with a 0.75-inch shank diameter, compatible with collet chucks, end mill holders, and milling machine spindles accepting that shank size.

Installation Notes

Installation and tool changes must be performed with the machine fully powered down and the spindle at a complete stop. Ensure the shank is seated fully and evenly in the collet or holder and that the set screw or collet nut is torqued per the toolholder manufacturer specifications. Inspect the cutting edges for chips or wear before use. Follow applicable shop safety standards and machine manufacturer guidelines when setting depth of cut and feed rates.