Cleveland C41207 Square End Mill 0.25 in 4 Flute Hss

Product Description

The CLEVELAND C41207 is a double-end, four-flute square end mill manufactured from high speed steel (HSS). It carries a 0.25-inch cutting diameter, a 0.625-inch length of cut, and a 0.375-inch straight cylindrical shank with a Weldon flat. The 30-degree spiral flute geometry and center-cutting design allow this tool to plunge directly into a workpiece and transition smoothly into lateral cuts. It is suited for milling operations on CNC machining centers, knee mills, and manual bridge mills where an uncoated HSS tool is preferred over carbide for tougher interrupted cuts or regrindable tooling programs.

The C41207 belongs to Cleveland's HD-4C series, a line of general-purpose end mills intended for production and maintenance machining environments. Primary workpiece materials include cast iron, non-ferrous metals, and steel. The double-end configuration doubles service life before replacement, making it a practical choice for shops running high volumes of moderate-tolerance profiling, slotting, and peripheral milling operations. Both ends share identical geometry and are interchangeable in the toolholder.

Key Features

• Double-end design extends usable tool life before disposal
• Center-cutting geometry allows direct plunge entry without a pre-drilled pilot hole
• 30-degree helix angle promotes chip evacuation in steel and cast iron
• Right-hand cut and right-hand flute configuration for standard spindle rotation
• Weldon flat on shank reduces pullout risk in side-lock toolholders
• Uncoated HSS construction is regrindable and suited for interrupted-cut applications

Compatibility

Designed for use on steel, cast iron, and non-ferrous metals as listed in the Cleveland HD-4C series specifications. Fits any toolholder accepting a 0.375-inch straight shank with Weldon flat.

Installation Notes

Installation is performed by a machinist or tooling technician. De-energize and lock out the machine spindle before changing tooling. Secure the shank fully into a side-lock or collet holder, ensuring the Weldon flat is aligned with the setscrew when using a side-lock holder to prevent axial pullout. Follow shop-standard runout tolerances and confirm tool projection matches programmed depth-of-cut parameters before engaging the spindle.