Cleveland C40355 Square End Mill 1 in 3 Flute PM-539R

Product Description

The CLEVELAND C40355 is a single-end square end mill designed for high-performance milling of aluminum and non-ferrous materials. Built from M42 powdered metal, this tool delivers the wear resistance and edge retention needed for production environments. It runs a 42-degree helix angle with a spiral, right-hand flute configuration, promoting efficient chip evacuation at higher feed rates. The bright, uncoated finish suits applications where coating buildup would reduce cutting efficiency. Licensed machinists and toolroom operators specify this series when working non-ferrous stock that demands sharp, consistent edges throughout the cut.

The C40355 fits standard milling setups in job shops, production floors, and toolrooms running aluminum, copper, brass, and similar non-ferrous alloys. The 1-inch diameter and 2-inch length of cut handle slotting, profiling, and peripheral milling operations. The Weldon flat shank seats securely in standard end mill holders, reducing pullout risk under aggressive cuts. This is a regular-length tool, suited to most conventional vertical and horizontal milling applications where extended reach is not required.

Key Features

• M42 powdered metal construction for improved hardness and wear resistance versus standard HSS
• 42-degree helix angle promotes aggressive chip evacuation in non-ferrous materials
• Center-cutting geometry allows direct plunge entry without pre-drilling
• Right-hand cut, right-hand flute spiral configuration for standard milling setups
• Weldon flat shank for secure tool holding with minimal runout
• Bright, uncoated finish optimized for aluminum and non-ferrous alloys

Compatibility

Designed for use in standard end mill holders accepting a 1-inch Weldon flat shank. Primary workpiece materials are aluminum and non-ferrous metals (material code N). Part of the CLEVELAND PM-539R series.

Installation Notes

Installation requires a standard end mill holder or collet chuck rated for a 1-inch shank diameter. Ensure the machine spindle is fully powered down and locked out before changing tooling. Torque the set screw against the Weldon flat per the tool holder manufacturer's specifications. Verify runout with a dial indicator after seating before committing to a full-depth cut.