Robbjack NR-204-03 Square End Mill 3/32 in 2 Flute Carbide

Product Description

The ROBBJACK NR-204-03 is a solid carbide square end mill designed for precision milling operations in metalworking and machining applications. Built to NR-204 series standards, this centercutting tool features a 3/32 inch (0.0938 inch) mill diameter with a 2-flute spiral geometry and a 30-degree helix angle. The right-hand cut and right-hand flute configuration suit standard CNC and manual milling setups. At 1-1/2 inches overall length with a 3/8 inch length of cut, this is a compact tool intended for tight-tolerance slot milling, profiling, and plunge operations in small-feature workpieces. Machinists and tooling professionals install this end mill in applications where precise geometry and carbide rigidity are required.

The NR-204-03 is suited for use in CNC machining centers, manual knee mills, and similar equipment where a 1/8 inch straight cylindrical shank is accepted. Its regular length classification and compact form factor make it well matched to small-part milling, micro-slot cutting, and detail profiling in ferrous and non-ferrous materials. The uncoated solid carbide construction in Material Grade C2 provides consistent performance across a range of workpiece materials without the variability introduced by coating processes.

Key Features

• Solid carbide construction, Material Grade C2, for rigidity and wear resistance
• 2-flute spiral geometry with 30-degree helix angle for efficient chip evacuation
• Centercutting design allows direct plunge entry into workpiece material
• Right-hand cut, right-hand flute - compatible with standard spindle rotation
• Uncoated finish for consistent dimensional performance without coating buildup
• Straight cylindrical 1/8 inch shank fits standard collet and chuck toolholding systems

Compatibility

Designed as an OEM-style tooling solution for milling machines and machining centers accepting a 1/8 inch straight cylindrical shank, consistent with ROBBJACK NR-204 series specifications.

Installation Notes

Installation and use of this end mill should be performed by qualified machinists familiar with CNC or manual milling equipment. Verify spindle runout and collet condition before seating the shank to avoid tool deflection or premature wear. Power down and lock out the machine spindle before changing tooling. Follow applicable shop safety standards and machine manufacturer guidelines for feeds, speeds, and depth of cut when using carbide end mills of this diameter.