Cleveland C33169 Square End Mill 0.75 in 4 Flute Hss

Product Description

The CLEVELAND C33169 is a 4-flute, single-end square end mill manufactured from high speed steel. It carries a 0.75-inch cutting diameter, a 1.625-inch length of cut, and a 0.625-inch straight cylindrical shank with a Weldon flat, giving setscrew-driven toolholders a positive grip. The spiral flute geometry runs at a 30-degree helix angle, promoting smooth chip evacuation and reducing chatter on a wide range of workpiece materials. The centercutting design allows plunge entry without a pre-drilled pilot hole. The tool is uncoated and ships ready for immediate use on ferrous and non-ferrous applications.

The C33169 is suited for milling operations on cast iron, non-ferrous metals, and steel in both manual and CNC machining environments. Its regular-length profile and right-hand cut with right-hand flutes make it a standard choice for peripheral milling, slotting, and side milling passes. The HG-4C series designation indicates a general-purpose geometry optimized for versatility across common shop materials. This end mill is typically run in vertical machining centers, knee mills, and similar setups where a 0.625-inch collet or Weldon-flat holder is available.

Key Features

• 0.75-inch cutting diameter with 1.625-inch length of cut
• 4 spiral flutes at a 30-degree helix angle for efficient chip removal
• Centercutting geometry enables direct plunge milling
• Right-hand cut and right-hand flute orientation
• 0.625-inch straight cylindrical shank with Weldon flat for secure toolholder engagement
• High speed steel construction, uncoated, suited for cast iron, non-ferrous metals, and steel

Compatibility

Designed as an OEM-style replacement and standard tooling option for 0.625-inch collet chucks and Weldon-flat side-lock holders used in vertical machining centers and manual knee mills. Primary workpiece materials are cast iron, non-ferrous metals, and steel as specified by the HG-4C series application data.

Installation Notes

End mills should be installed by a qualified machinist following the toolholder manufacturer torque and clamping procedures. Ensure the machine spindle is fully stopped and locked before inserting or removing the tool. Verify runout with a dial indicator after clamping; excessive runout accelerates flute wear and can cause premature tool breakage. Always apply appropriate cutting fluid or air blast for the workpiece material being machined.