Cleveland C39706 Square End Mill 5/16 in 3 Flute Hss Ticn

Product Description

The CLEVELAND C39706 is a single-end square end mill designed for material removal in milling operations across a range of metals and cast materials. Built from high speed steel with a titanium carbonitride (TiCN) finish, the tool offers surface hardness and heat resistance suited for production machining environments. The 5/16 inch cutting diameter pairs with a 3/4 inch length of cut and a 3/8 inch straight-cylindrical or Weldon Flat shank, giving machinists a compact, rigid setup. A 30-degree helix angle and three spiral flutes promote chip evacuation and cutting efficiency. This end mill is installed and run by machinists and tool-and-die professionals on vertical mills and CNC machining centers.

The C39706 is rated for primary workpiece materials including cast iron, non-ferrous metals, and steel, covering a broad range of shop applications. Its centercutting geometry allows plunge cuts in addition to conventional peripheral and slot milling. The regular-length overall dimension of 2-1/2 inches keeps deflection low in tight setups. Right-hand cut and right-hand flute configuration is standard for conventional milling machine spindle direction.

Key Features

• TiCN coating increases surface hardness and extends tool life when cutting ferrous and non-ferrous materials
• 30-degree helix angle with spiral flute geometry improves chip flow and reduces cutting forces
• Centercutting design allows plunge milling in addition to peripheral and slot operations
• Three-flute configuration balances chip clearance and cutting edge strength for medium feeds
• Straight-cylindrical and Weldon Flat shank options provide secure tool holding in standard end mill holders
• Right-hand cut and right-hand flute for use with standard CNC and manual milling spindles

Compatibility

Designed for use with cast iron, non-ferrous metals, and steel workpiece materials as an OEM-style production end mill in the Cleveland HG-3 series.

Installation Notes

Install in a properly sized end mill holder or collet rated for a 3/8 inch shank before mounting in the spindle. Ensure the machine spindle is fully stopped and the tool holder is clean and free of debris before insertion. Verify spindle rotation direction matches the right-hand cut designation before engaging the workpiece. Follow shop safety protocols and applicable OSHA machining standards when setting feeds, speeds, and depth of cut.