Niagara Cutter N52121 Cobalt Steel Square Nose End Mill, Inch, Weldon Shank, Uncoated (Bright) Finish, Finishing Cut, 30 Degree Helix, 4 Flutes, 0.375" Cutting Diameter, 0.375" Shank Diameter

Key features

• Number of flutes varies; fewer flutes have more chip-carrying capacity and more flutes produce a finer finish
• Cobalt steel resists abrasion and high cutting temperatures, and has higher feed rates than high-speed steel
• Uncoated (bright) tools have no additional surface treatment or coating for use on a broad range of materials
• Square nose end mills (also called square end) create sharp, unrounded cuts
• Center-cutting design allows the end mill to plunge into material like a drill bit while also performing conventional surface milling

The Niagara Cutter SPC408 uncoated (bright) cobalt steel square nose end mill has a 30-degree helix for milling a wide range of materials, including high-temperature alloys. The number of flutes varies; fewer flutes provide better chip-carrying capacity, while more flutes produce a finer finish. The cobalt steel substrate can be run at faster speeds and stays sharp longer than high-speed steel tools, while offering greater resistance to heat and abrasion. With no coating or surface treatment, this uncoated tool can be used on a broad range of materials. The 30-degree helix angle supports general-purpose applications. It balances lower angles’ strong cutting edge for difficult-to-machine materials with higher angles’ increased cutting action. The tool’s square end has straight cutting edges that create sharp, unrounded cuts, while the center-cutting design has cutting teeth at the end of the tool that support making pocket cuts, profiling, and slotting. Cutting diameter tolerance is +0.001” to -0.000”. The end mill has a Weldon shank. End mills are designed to remove material and create multi-dimensional shapes and profiles. They have cutting edges along the outside diameter and flu

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