Cleveland C39064 Square End Mill 3/16 in 2 Flute Hss

Product Description

The CLEVELAND C39064 is a 2-flute, square-end, high speed steel end mill designed for general-purpose milling in machine shop and production environments. With a cutting diameter of 0.1875 inches and a long-series length of cut measuring 1.25 inches, this tool reaches deeper into workpieces than standard-length end mills of the same diameter. The 0.375-inch straight-cylindrical shank with Weldon flat seats securely in standard end mill holders. A 30-degree right-hand spiral flute geometry promotes efficient chip evacuation while the centercutting design allows both plunge and conventional milling operations. Licensed machinists and CNC operators are the primary users of this tool.

The C39064 is suited for milling cast iron, non-ferrous metals, and steel in light-to-moderate material removal applications. The uncoated high speed steel construction makes it a practical choice for operations where regrinding is preferred over disposable carbide tooling. The long length of cut range — 1.25 to 1.50 inches — gives it utility in slotting, side milling, and profiling passes where a standard-length end mill cannot reach the required depth. This tool belongs to the Cleveland HG-2 series, a long-series, general-purpose line intended for a broad range of workpiece materials.

Key Features

• Centercutting geometry supports direct plunge entry without a pre-drilled hole
• 30-degree right-hand spiral flute promotes chip flow away from the cutting zone
• Long-series length of cut (1.25 inches) extends reach beyond standard-length end mills
• Straight-cylindrical shank with Weldon flat for positive drive in end mill holders
• Uncoated high speed steel construction is compatible with regrinding services
• Right-hand cut and right-hand flute — direct replacement for standard 2-flute RH end mills of this size

Compatibility

Designed for use with standard 3/8-inch end mill holders, collet chucks, and Weldon-style set-screw holders. Primary workpiece materials are cast iron, non-ferrous metals, and steel. Part of the Cleveland HG-2 long-series end mill line.

Installation Notes

Installation is performed by a machinist or CNC operator during tooling setup. Secure the shank fully into the holder so the Weldon flat aligns with the set screw before tightening. Confirm spindle direction is set to right-hand rotation before running. Inspect the cutting edges for chips or wear before each use, as damaged high speed steel end mills should be reground or replaced rather than run to failure.