Robbjack TR-404-04 Square End Mill 1/8 in 4 Flute Carbide

Product Description

The ROBBJACK TR-404-04 is a solid carbide square end mill designed for precision milling operations in metalworking and machining applications. Part of the TR-404 series, this tool features a 1/8 inch cutting diameter, a 1/2 inch length of cut, and a 1-1/2 inch overall length. The four-flute spiral configuration with a 30-degree helix angle supports efficient chip evacuation and smooth surface finishes. It is uncoated and built to the Tuffy material grade specification, making it well suited for general-purpose milling in a variety of workpiece materials. Machinists and CNC operators install this tool in machining centers, knee mills, and CNC routers.

This end mill is intended for use in light to medium-duty milling passes where a small-diameter, short-reach tool is required. The straight cylindrical shank fits standard collet and end mill holders accepting 1/8 inch shanks. Typical applications include slotting, profiling, and contouring in ferrous and non-ferrous materials. The regular length designation makes it appropriate for standard-depth cuts where extended reach is not needed. The centercutting design allows for plunge milling when the operation calls for it.

Key Features

• Solid carbide Tuffy-grade construction for rigidity and wear resistance
• Four spiral flutes with a 30-degree helix angle for efficient chip flow
• Centercutting geometry enables direct plunge entry into the workpiece
• Right-hand cut and right-hand flute orientation for standard spindle rotation
• Uncoated finish suitable for general-purpose milling applications
• Straight cylindrical shank for compatibility with standard collet holders

Compatibility

Designed as an OEM-style replacement or direct-use tooling for machining setups requiring a 1/8 inch shank square end mill in standard collet or end mill holder systems.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator with the machine spindle fully stopped and locked out. Seat the shank fully into the collet or holder to the recommended engagement depth before tightening. Verify runout with a dial indicator before beginning the cut. Follow applicable shop safety procedures and machine manufacturer guidelines for tool-change operations.