Robbjack C1-301-06 Square End Mill 3/16 in 3 Flute Carbide

Product Description

The ROBBJACK C1-301-06 is a solid carbide square end mill designed for precision material removal in milling applications. Part of the C1-301 series, this single-end tool features a 3/16-inch cutting diameter, a 5/8-inch length of cut, and a 2-inch overall length. With 3 spiral flutes and a 30-degree helix angle, it delivers efficient chip evacuation and clean edge geometry. The straight cylindrical shank measures 3/16 inch in diameter. This tool is centercutting, allowing plunge entry, and runs right-hand cut with right-hand flute direction. It is uncoated and carries a C2 material grade rating. Licensed machinists, toolroom operators, and CNC programmers are the typical end users.

This end mill is suited for light-to-moderate milling operations in ferrous and non-ferrous metals, plastics, and composites. Its regular-length geometry makes it a standard choice for open-pocket milling, slotting, profiling, and peripheral cuts on vertical machining centers and manual knee mills. The 3-flute configuration balances chip room with surface finish quality, making it a practical option for aluminum and similar materials where chip clearance is a priority. It is not configured for extended-reach applications.

Key Features

• Solid carbide construction with C2 material grade for rigidity and wear resistance
• 3 spiral flutes at 30-degree helix angle for efficient chip evacuation
• Centercutting design allows direct plunge entry without a pre-drilled hole
• Right-hand cut and right-hand flute direction for standard spindle compatibility
• Straight cylindrical shank for secure collet or end mill holder retention
• Uncoated finish suitable for use with cutting fluids across a range of workpiece materials

Compatibility

Designed as an OEM-style replacement or direct-application solid carbide square end mill for use in standard 3/16-inch collets, end mill holders, or compatible toolholding systems on CNC or manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and locked out before mounting or removing the tool. Seat the shank fully into the collet or holder and torque the retention hardware to the toolholder manufacturer's specification. Inspect the cutting edges for chips or damage before each use, and verify runout with a dial indicator when precision tolerances are required.