Cleveland C33420 Square End Mill 1 in 4 Flute Hss Ticn

Product Description

The CLEVELAND C33420 is a 4-flute square end mill engineered for high-performance milling in ferrous and non-ferrous materials. Built from high speed steel with a titanium carbonitride (TiCN) finish, it delivers improved surface hardness and wear resistance compared to uncoated HSS tooling. The 1-inch cutting diameter pairs with a 4-inch length of cut and a 30-degree helix angle in a spiral flute geometry that promotes efficient chip evacuation. At 6.5 inches overall length with a 1-inch straight-cylindrical shank, this tool seats securely in standard end mill holders and Weldon flat-style collet chucks. Center-cutting geometry allows plunge entry, giving machinists added versatility in slotting and profiling operations. It is a right-hand cut, right-hand flute configuration in the Cleveland HG-4C series.

This end mill is suited for use in manual knee mills and CNC machining centers in job shop, toolroom, and production environments. Primary workpiece materials include cast iron, non-ferrous metals, and steel. The regular-length classification and 2-inch-plus length-of-cut range make it a practical choice for full-depth slotting, peripheral milling, and profiling passes where a general-purpose HSS tool is specified. The TiCN coating extends tool life when cutting abrasive or harder steel grades at moderate speeds and feeds.

Key Features

• 1-inch cutting diameter with 4-inch length of cut for deep slotting and profiling
• 4-flute spiral geometry promotes chip evacuation and improves surface finish
• TiCN coating increases surface hardness and wear resistance over uncoated HSS
• 30-degree helix angle balances cutting force and chip flow in steel and cast iron
• Center-cutting design allows direct plunge entry without pre-drilling
• Right-hand cut, right-hand flute — compatible with standard spindle rotation on most mills
• Straight-cylindrical shank with Weldon flat for positive tool retention

Compatibility

Designed for use in standard 1-inch end mill holders and Weldon flat collet chucks on manual mills and CNC machining centers. Rated for cast iron, non-ferrous metals, and steel workpiece materials per Cleveland HG-4C series specifications.

Installation Notes

Installation should be performed by a qualified machinist following shop safety protocols. Secure the shank fully into the tool holder to the minimum insertion depth required before tightening — do not grip on the flutes. Verify spindle rotation direction matches the right-hand cut configuration before engaging the workpiece. Inspect the cutting edges and TiCN coating for chips or wear before each use, and replace the tool if edge integrity is compromised.