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Niagara Cutter C430 Carbide Square Nose End Mills, Inch, Uncoated (Bright) Finish, Roughing and Finishing Cut, 30 Degree Helix, For Use With All Materials

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Product Specifications
Manufacturer Series Number
Cutting Direction
Right Hand
Compatible Material
All Materials
Finish Types
Uncoated (Bright)
End Cut Type
Center Cutting
Shank Type
Material Type
Cut Type
Roughing and Finishing
Cutting Angle
30  Degrees
Brand Name
Niagara Cutter
System of Measurement

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1/64" 1/8" 0.031" 1.5" 4 N85503 B003CP0WS0 yes $21.85 Buy Options
1/32" 1/8" 0.094" 1.5" 4 N55666 B003CP0WSK yes $12.23 Buy Options
1/32" 1/8" 0.0781" 1.5" 4 N85504 B003CP0WSA yes $12.23 Buy Options
3/64" 1/8" 0.125" 1.5" 4 N55667 B003CP0WT4 yes $12.23 Buy Options
3/64" 1/8" 0.109" 1.5" 4 N85505 B003CP0WSU yes $12.23 Buy Options
1/16" 1/8" 0.125" 1.5" 4 N85652 B003CP0WTE yes $9.69 Buy Options
1/16" 0.063" 1" 4" 4 N55670 B003CP0WUI yes $30.46 Buy Options
1/16" 0.063" 1" 3" 4 N55669 B003CP0WU8 yes $22.84 Buy Options
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3/32" 1/8" 0.1875" 1.5" 4 N85653 B003CP0WVC yes $9.26 Buy Options
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3/32" 0.094" 1" 3" 4 N55673 B003CP0WW6 yes $21.64 Buy Options
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7/64" 1/8" 0.375" 1.5" 4 N85509 B003CP0WWQ yes $10.73 Buy Options
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Key Features

  • Four flutes produce a better finish than fewer flutes
  • Square nose end mills (also called square end) create sharp, unrounded cuts
  • Carbide can run at higher speeds than high-speed steel, resisting abrasion and high cutting temperatures
  • Uncoated (bright) tools have no additional surface treatment or coating for use on a broad range of materials
  • Center-cutting design allows the end mill to plunge into material like a drill bit while also performing conventional surface milling

Product Description

The Niagara Cutter C430 uncoated carbide square nose end mill has four flutes and a 30-degree helix angle for general-purpose machining on a range of materials. The tool’s square end creates sharp, unrounded cuts, and the center-cutting design has cutting teeth at the end of the tool, so it can be fed into the workpiece like a drill bit. Four flutes produce a better finish than fewer flutes. 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 carbide substrate is harder than high-speed or cobalt steel, making it more wear resistant at high speeds and providing longer tool life. With no coating or surface treatment, this uncoated tool can be used on a broad range of materials. Cutting diameter tolerance is +0.000” to -0.002”. The round shank accommodates a variety of holders.

End mills are designed to remove material and create multi-dimensional shapes and profiles. They have cutting edges along the outside diameter and flutes that remove chips from the cutting area and allow cooling fluids to enter. If heat is not reduced effectively, the tool’s cutting edges will dull and additional material buildup can occur. The number of flutes can range from two to eight. Two-flute designs offer the most efficient chip removal, but more flutes provide a smoother finish. The shank is the end of the tool held in place by a tool holder or machine. Center-cutting end mills can create three-dimensional shapes and profiles, and make plunge cuts similar to a drill bit. Non-center-cutting end mills are for applications such as peripheral milling and finishing, but cannot make plunge cuts.

Niagara Cutter has been designing and manufacturing precision cutting tools since 1954. Specializing in end mills, cutting mills, and saws, the company is based in New York and manufactures its tools at facilities in Pennsylvania and Massachusetts. This allows the company control over production, from substrate to coating, which is essential for customers in a variety of industries, especially aerospace and automotive.

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