Robbjack C1-301-04 Square End Mill 1/8 in 3 Flute Carbide

Product Description

The ROBBJACK C1-301-04 is a solid carbide square end mill designed for precision milling in metalworking and machining applications. With a 0.125-inch mill diameter, 0.5-inch length of cut, and a 1.5-inch overall length, this tool delivers consistent material removal in a compact form factor. The 3-flute geometry with a 30-degree helix angle balances chip evacuation with surface finish quality. The straight cylindrical shank and right-hand cut with right-hand flute configuration make it a standard choice for CNC and manual milling operations across a range of workpiece materials.

This end mill is suited for slotting, profiling, and plunge cutting operations in ferrous and non-ferrous materials. Its centercutting capability allows direct plunging into the workpiece without a pre-drilled pilot hole. The regular-length configuration fits standard tool holders used in both vertical machining centers and manual knee mills. Machinists and CNC operators working with aluminum, brass, mild steel, and similar materials will find this a dependable choice for small-diameter finish and semi-finish cuts.

Key Features

• Solid carbide construction in material grade C2 for rigidity and wear resistance in small-diameter tooling
• 3-flute spiral geometry with 30-degree helix for efficient chip flow and improved finish
• Centercutting design allows direct plunge entry without a pilot hole
• Right-hand cut and right-hand flute for standard CNC and manual mill spindle compatibility
• Straight cylindrical shank with tight tolerance (-0.0001/-0.0002 inches) for secure tool holder engagement
• Uncoated finish suits applications where coating is not required or where re-sharpening is anticipated

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide end mill for standard 1/8-inch collets and tool holders used in CNC machining centers and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is powered down or in a safe state before changing tooling. Seat the shank fully into a clean, undamaged collet or end mill holder and torque the retention mechanism to the tool holder manufacturer's specification. Verify runout with a dial indicator before beginning a cut, especially at small diameters where deflection has a greater impact on tolerance and tool life.