Cleveland C41642 Square End Mill 1 in 2 Flute Hss HG-2

Product Description

The CLEVELAND C41642 is a 2-flute, high speed steel square end mill designed for general-purpose milling operations in machine shops and manufacturing environments. It features a 1 inch cutting diameter, a 1-1/2 inch length of cut, and a 3/4 inch straight cylindrical shank with a Weldon flat for positive retention in the tool holder. Overall length is 4-1/8 inches. The 30-degree helix spiral flute geometry promotes efficient chip evacuation and smooth cutting action. This is a right-hand cut, right-hand flute, centercutting tool, meaning it can be used for both peripheral and plunge cutting. It belongs to Cleveland's HG-2 series and ships uncoated.

This end mill is suited for face milling, slotting, profiling, and pocketing operations on cast iron, non-ferrous metals, and steel. It is a regular-length tool intended for standard-reach applications on vertical mills, CNC machining centers, and manual knee mills. Machinists, tool-and-die makers, and general machine shop technicians are the primary users. It is not an extended-reach tool, so it is best applied where standard gage lengths are sufficient.

Key Features

• Centercutting design allows direct plunge entry without a pre-drilled pilot hole
• 30-degree helix angle promotes chip flow and reduces cutting forces on cast iron, non-ferrous, and steel workpieces
• Weldon flat on the 3/4 inch shank provides positive drive and prevents tool pull-out
• Right-hand cut and right-hand flute configuration compatible with standard spindle rotation
• Uncoated high speed steel construction — resharpenable and suitable for regrinding service
• HG-2 series regular-length geometry balances rigidity and reach for typical shop applications

Compatibility

Designed for use in standard 3/4 inch end mill holders, collet chucks, and Weldon-style set-screw holders on vertical mills and CNC machining centers. Rated for cutting cast iron, non-ferrous metals, and steel workpieces.

Installation Notes

Install using a 3/4 inch end mill holder or collet rated for the shank diameter; ensure the set screw engages the Weldon flat fully before torquing the holder. Always power down and lock out the spindle before changing tooling. Confirm runout with a dial indicator after seating the tool if tolerances are critical. High speed steel tooling requires appropriate speeds and feeds for the workpiece material — consult published HSS cutting data for the specific material being machined.