Cleveland C41383 Square End Mill 5/16 in 4 Flute Hss

Product Description

The CLEVELAND C41383 is a 4-flute, square-end, single-end mill made from high speed steel (HSS), designed for general-purpose milling operations in machine shops and production environments. It carries a 5/16-inch cutting diameter, a 2-inch length of cut, and an overall length of 3.25 inches with a 3/8-inch straight-cylindrical shank that also accepts a Weldon flat drive. The spiral flute geometry, combined with a 30-degree helix angle and centercutting capability, allows this tool to perform side milling, slotting, and plunge cutting in a single setup. Installation and operation are handled by machinists and CNC operators working with milling machines and machining centers.

This end mill is suited for cutting cast iron, non-ferrous metals, and steel in both manual and CNC milling applications. The extra-long length-of-cut classification makes it appropriate for deeper pocket milling and side-wall finishing where a standard-length tool would not reach. The right-hand cut and right-hand flute configuration is the conventional setup for most vertical milling machines. It belongs to the Cleveland HG-4C series, which targets high-performance general milling on a range of common workpiece materials.

Key Features

• Centercutting design allows direct plunge entry without a pre-drilled hole
• 30-degree helix angle promotes chip evacuation and reduces cutting forces
• 4-flute configuration balances material removal rate with surface finish quality
• Straight-cylindrical shank with Weldon flat accommodates set-screw style toolholders
• Uncoated HSS construction suitable for use with cutting fluid on steel, cast iron, and non-ferrous metals
• Extra-long length of cut (2 inches) enables deep pocket and side-wall milling

Compatibility

Designed for use in standard milling machine collets and Weldon flat toolholders accepting a 3/8-inch shank diameter. Primary workpiece materials are cast iron, non-ferrous metals, and steel as specified by the manufacturer for the HG-4C series.

Installation Notes

Installation is performed by a machinist or CNC operator. Ensure the spindle is fully stopped and the machine is locked out before changing tooling. Seat the shank fully into the collet or toolholder and confirm the Weldon flat is aligned with the set screw before torquing. Use an appropriate cutting fluid or coolant for the workpiece material to maximize tool life and chip clearance.