Hertel E1031920 Square End Mill 15/16 in 4 Flute Hss

Product Description

The HERTEL E1031920 is a 4-flute square end mill designed for milling operations in metal cutting and machining applications. Built from M7 high speed steel, this tool features a 15/16-inch (0.9375 inch) cutting diameter and a 1-7/8-inch length of cut, making it well suited for peripheral and slot milling in ferrous and non-ferrous materials. The right-hand cut, right-hand spiral flute geometry with a 30-degree helix angle promotes efficient chip evacuation and stable cutting action. A 3/4-inch shank diameter ensures secure retention in standard end mill holders. Licensed machinists and tool-and-die professionals install and operate this tool on vertical and horizontal milling machines and machining centers.

This end mill is suited for regular-length milling tasks in job shop, production machining, and maintenance environments. The uncoated M7 high speed steel construction allows for resharpening, extending tool life in lower-volume applications. The non-centercutting design means this tool is intended for peripheral milling and side milling passes rather than plunge cutting. It is appropriate for use in both manual mills and CNC machining centers where a 3/4-inch tool holder is available.

Key Features

• M7 high speed steel construction for toughness and resharpening capability
• 15/16-inch cutting diameter with 1-7/8-inch length of cut for regular-length reach
• 4-flute configuration with 30-degree right-hand spiral helix for efficient chip flow
• Uncoated finish suitable for regrinding and lower-speed machining environments
• Right-hand cut and right-hand flute direction for standard spindle rotation
• Non-centercutting geometry — not intended for plunge or drill-in entry

Compatibility

Designed as a standard single-end square end mill compatible with milling machines and machining centers equipped with 3/4-inch end mill holders or collet chucks accepting a 3/4-inch shank diameter.

Installation Notes

Installation and operation should be performed by qualified machinists following applicable shop safety procedures. Secure the 3/4-inch shank fully into a clean, undamaged end mill holder and confirm runout with a dial indicator before cutting. Always power down and lock out the machine spindle before changing tooling. Do not use this tool for plunge entry cuts, as it is a non-centercutting design.