Cleveland C41253 Square End Mill 3/8 Inch 4 Flute Hss

Product Description

The CLEVELAND C41253 is a 4-flute square end mill made from high speed steel, designed for general-purpose milling operations in metalworking applications. With a 3/8 inch cutting diameter and a 3/4 inch length of cut, it handles slotting, peripheral milling, and plunge cutting in a compact, regular-length profile. The right-hand spiral flute geometry at a 30-degree helix angle promotes efficient chip evacuation and stable cutting action. The straight cylindrical shank with Weldon flat accommodates standard end mill holders and collet chucks. This tool is installed and operated by machinists and tool-and-die professionals working on manual mills, CNC machining centers, and knee mills.

The C41253 belongs to the CLEVELAND HG-4C series and is suited for milling cast iron, non-ferrous metals, and steel. Its centercutting design allows direct plunge entry into the workpiece without a pre-drilled hole, giving setup flexibility in both roughing and finishing passes. The uncoated high speed steel construction makes it a practical choice for lower-speed, oil-lubricated cutting environments where regrinding and reconditioning are standard shop practice.

Key Features

• 4-flute spiral geometry with 30-degree helix angle for balanced chip load and surface finish
• Centercutting design enables direct plunge milling without pilot hole
• Right-hand cut and right-hand flute orientation for standard spindle direction
• Straight cylindrical shank with Weldon flat for secure tool holding
• Uncoated high speed steel construction suited for regrindable tooling programs
• Regular length profile for rigidity in close-tolerance milling setups

Compatibility

Designed for use with cast iron, non-ferrous metals, and steel workpieces. Fits standard 3/8 inch end mill holders, collet chucks, and Weldon-flat-style tool holders on manual and CNC milling machines.

Installation Notes

Installation is performed by a qualified machinist. Ensure the machine spindle is fully stopped and locked out before mounting or removing the end mill. Seat the shank fully in the holder and torque set screws against the Weldon flat per the tool holder manufacturer specification. Verify runout with a dial indicator before initiating a cut to protect both the tool and the workpiece.