Square End Mills | McMaster-Carr

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3,436 Products

Carbide Square End Mills

For longer tool life and a better finish in general purpose milling applications, these solid carbide end mills are harder, stronger, and more wear resistant than high-speed steel and cobalt steel end mills.

Fast-Cutting Carbide Square End Mills

Variable spacing between the flutes reduces vibration, allowing these end mills to provide fast cuts, smooth finishes, and long tool life. They have a 90° corner for milling square corners in slots, pockets, and edges.

Fast-Cutting Carbide Square
End Mills with Chamfer Corner

A 45° corner chamfer improves cutting edge strength, so these end mills last longer than standard square end mills when milling hard material; however they do not create as sharp of a corner. Variable spacing between the flutes reduces vibration, allowing them to provide fast cuts, smooth finishes, and long tool life.

Fast-Cutting Roughing Carbide Square End Mills

Remove large amounts of material quickly without sacrificing tool life. Variable spacing between flutes reduces cutting time and vibration in high-volume jobs.

Oversize-Tolerance Carbide Square End Mills

Also known as NC tolerance end mills, these carbide end mills have oversize mill diameter tolerances. They're sized to match standard high-speed steel end mills, so you can use them as longer-lasting replacements without changing the size of the cut.

Roughing Carbide Square End Mills

Serrations along the cutting edge act as chip breakers, so these end mills can remove large amounts of material at high speeds.

Finishing Carbide Square End Mills

Intersecting flutes create a fine finish, making these end mills good for operations requiring light stock removal, such as deburring, profiling, and finishing.

Fast-Cutting Carbide Square End
Mills for Stainless Steel and Titanium

Variable spacing between the flutes reduces vibration, allowing these end mills to provide fast cuts, smooth finishes, and long tool life. They have a high helix angle and a wear-resistant coating for excellent shearing and chip removal in stainless steel and titanium.

Carbide Square End Mills for
Stainless Steel and Titanium

With a wear-resistant coating and high helix angle, these end mills provide excellent shearing and chip removal in stainless steel and titanium.

Fast-Cutting Roughing Carbide Square
End Mills for Stainless Steel and Titanium

Serrations along the cutting edge act as chip breakers, so these end mills can remove large amounts of material at high speeds. They have a high helix angle and a wear-resistant coating for excellent shearing and chip removal in stainless steel and titanium.

Carbide Square End Mills for Carbon
Fiber, Fiberglass, and Graphite

These end mills have a diamond or diamondlike coating for machining abrasive material, such as carbon fiber, fiberglass, and graphite.

Carbide Square End Mills for
Aluminum, Brass, and Bronze

A titanium-carbonitride (TiCN) coating prevents soft material, such as aluminum, brass, and bronze, from accumulating on the cutting edge and creating an uneven finish.

Fast-Cutting Carbide Square End
Mills for Aluminum, Brass, and Bronze

Variable spacing between the flutes reduces vibration, allowing these end mills to provide fast cuts, smooth finishes, and long tool life. They are uncoated for use in soft material, such as aluminum, brass, and bronze.

Roughing Carbide Square End Mills
for Aluminum, Brass, and Bronze

Serrations along the cutting edge act as chip breakers, so these end mills can remove large amounts of material at high speeds. They are uncoated for use in soft material, such as aluminum, brass, and bronze.

Fast-Cutting Carbide Square End Mills
for Tool Steel, Hardened Steel, and Iron

Variable spacing between the flutes reduces vibration for faster cuts, a smoother finish, and longer tool life.

Carbide Square End Mills for Nickel

Three high-helix-angle flutes provide a smooth finish on nickel alloys, such as Monel, Inconel, and Hastelloy.

Carbide Square End Mills with Two Milling Ends

When one end wears out, switch to the opposite end for two times the life of a standard carbide end mill. Made of solid carbide, these end mills are harder, stronger, and more wear resistant than high-speed steel for the longest life and best finish on hard material.

High-Speed Steel Square End Mills

Use these end mills for short runs and general purpose milling in most material, such as aluminum, brass, bronze, iron, and steel.

Roughing High-Speed Steel Square End Mills

Serrations along the cutting edge act as chip breakers, so these end mills can remove large amounts of material at high speeds.

High-Speed Steel Square End
Mills for Keyways in Rotary Shafts

Commonly used to make keyways in rotary shafts, these tools have a -0.0015" to 0.0000" mill diameter tolerance for creating a precise fit.

High-Speed Steel Square End Mills
for Aluminum, Brass, and Bronze

With a higher helix angle than standard high-speed steel end mills, these clear more chips and generate less heat, making them good for milling soft material, such as aluminum, brass and bronze.

High-Speed Steel Square End
Mills with Two Milling Ends

When one end wears out, switch to the opposite end for two times the life of a standard high-speed steel end mill. Made of high-speed steel, these end mills are for general purpose milling in most material, such as aluminum, brass, bronze, iron, and steel.

Cobalt Steel Square End Mills

With better heat and wear resistance than high-speed steel, these cobalt steel end mills can run at higher speeds and provide better performance on hard material, such as iron, hardened steel, titanium, and tool steel.

Roughing Cobalt Steel Square End Mills

Serrations along the cutting edge act as chip breakers, so these end mills can remove large amounts of material at high speeds.

Roughing Cobalt Steel Square End
Mills for Aluminum, Brass, and Bronze

A higher helix angle means these end mills clear more chips than other roughing cobalt steel end mills, making them better for milling aluminum, brass, and bronze. Serrations along the cutting edge act as chip breakers, so they can remove large amounts of material at high speeds.

Cobalt Steel Square End Mills with Two Milling Ends

When one end wears out, switch to the opposite end for two times the life of a standard cobalt steel end mill. With better heat and wear resistance than high-speed steel, these cobalt steel end mills can run at higher speeds and provide better performance on hard material, such as iron, hardened steel, titanium, and tool steel.

Replaceable Carbide-Insert Square End Mills

Replaceable Carbide-Insert End
Mills for Manual Milling Machines

Use these tools with low-horsepower, manual milling machines. They have clamps for holding inserts that do not have a mounting hole. Replaceable carbide-insert end mills reduce waste and cost in high-volume jobs—when the cutting edges dull, replace the carbide inserts instead of the entire end mill.

Replaceable Carbide-Insert End Mills

Fasten carbide inserts directly to these end mills for a hold that's strong enough to handle the high speeds of a CNC machine. Replaceable carbide-insert end mills reduce waste and cost in high-volume jobs—when the cutting edges dull, replace the carbide inserts instead of the entire end mill.

Square End Mill Sets

High-Speed Steel Square End Mill Sets

For general purpose milling in most material, the end mills in these sets have one milling end and a standard shank.

High-Speed Steel Square End
Mill Sets with Two Milling Ends

Offering two times the life of a standard end mill, these have two milling ends so you can switch to the opposite end when one end wears out. Use them for general purpose milling in most material, such as aluminum, brass, bronze, iron, and steel.

Carbide Square End Mill Sets

The end mills in these sets have one milling end and a standard shank. Made of solid carbide, they're harder, stronger, and more wear resistant than high-speed steel for the longest life and best finish on hard material.

Carbide Square End Mill Sets with Two Milling Ends

Offering two times the life of a standard carbide end mill, the end mills in these sets have two milling ends so you can switch to the opposite end when one end wears out. Made of solid carbide, they're harder, stronger, and more wear resistant than high-speed steel for the longest life and best finish on hard material.

Router Bits

Straight and Spiral Router Bits for
Wood, Particle Board, and Plywood

Create square slots, pockets, and edges in wood.

Straight and Spiral Router Bits for Aluminum

Also known as O-flute bits, these have a single open flute for efficient chip removal when cutting aluminum. Use them to create square slots, pockets, and edges.

Straight and Spiral Router Bits for Plastic

Cut square slots, pockets, and edges in plastic.

Spiral Router Bits for Foam

The cutting edges have a shallow angle to carve hard and soft foam. With a square cut style, these bits create slots, pockets, and edges.

Straight Router Bits for Ceramics

With a diamond coating, these bits resist wear when used on ceramics and other highly abrasive material. All have a square cut style to create slots, pockets, and edges.

Spiral Router Bits for Steel and Stainless Steel

The aluminum-titanium-nitride (AlTiN) coating on these bits resists heat and wear when cutting steel and stainless steel. They have a square cut style for creating slots, pockets, and edges.