Flat End Mills | McMaster-Carr

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	Cut Style Cut Style	Show

	Square

	Cut Style Cut Style	Hide


Square	Ball

Tapered	Rounded-Edge Square

Corner Rounding	Chamfer

Threading	Dovetail

Drill/Mill	Engraving

Keyseat	Undercutting

Face Milling	Double Chamfer

T-Slot	Convex Radius

Slitting	V-Groove

Flat Surface	Concave Radius

Flush Trimming	Gear

Panel Pilot	Slotting

Hinge Mortise	Rabbet

	System of Measurement System of Measurement

Inch

Metric

	Mill Diameter Mill Diameter

	Number of Flutes Number of Flutes


1	2

3	4

5	6

7	8

9	11

	For Use On For Use On

	Length of Cut Length of Cut

	Shank Diameter Shank Diameter

	Material Material

	Finish Finish

Aluminum Non-Ferrous (ANF)
Coated

Aluminum Titanium Nitride
(AlTiN) Coated

Black Oxide

Diamond Coated

Diamondlike Carbon (DLC)
Coated

Titanium Aluminum Nitride
(TiAlN) Coated

Titanium Aluminum Silicon
Nitride (TiAISiN) Coated

Titanium Carbonitride (TiCN)
Coated

Titanium Nitride (TiN) Coated

Uncoated

	Number of Milling Ends Number of Milling Ends

	1
	2

	Overall Length Overall Length

	End Mill Type End Mill Type

Center Cutting

Noncenter Cutting

	Helix Angle Helix Angle

	Individual/Set Individual/Set


Individual	Set

	Shank Type Shank Type


Round	R8 Taper

	Flute Spacing Flute Spacing

Equal

Variable

	Flute Type Flute Type

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Cutting Diameter Cutting Diameter

	For Tool Type For Tool Type

CNC Machine

Hand Router

Router Table

	Chip Removal Direction Chip Removal Direction

Down

Forward

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3,475 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.

Carbide Square Bur 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
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.

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 Tool
Steel, Hardened Steel, and Iron

Alternating layers of titanium-nitride (TiN) and titanium-aluminum-nitride (TiAlN) coatings give these end mills the hardness, wear resistance, and temperature resistance needed for cutting tool steel, hardened steel, and iron.

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.

Undersize-Tolerance High-Speed
Steel Square End Mills

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 Plastic

Cut square slots, pockets, and edges in plastic.

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 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 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.

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.