Three-Flute End Mills | McMaster-Carr

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	Number of Flutes Number of Flutes	Show

	3

	Number of Flutes Number of Flutes	Hide


1	2

3	4

5	6

7	8

9	11

	System of Measurement System of Measurement

Inch

Metric

	Mill Diameter Mill Diameter

	Cut Style Cut Style


Square	Ball

Tapered	Rounded-Edge Square

Threading	Corner Rounding

Dovetail	Flush Trimming

Slotting

	For Use On For Use On

	Length of Cut Length of Cut

	Material Material

Carbide

High-Speed Steel

Cobalt Steel

	Finish Finish

Aluminum Titanium Nitride
(AlTiN) Coated

Diamondlike Carbon (DLC)
Coated

Titanium Aluminum Nitride
(TiAlN) Coated

Titanium Carbonitride (TiCN)
Coated

Titanium Nitride (TiN) Coated

Uncoated

	Shank Diameter Shank Diameter

	Overall Length Overall Length

	Taper Angle per Side Taper Angle per Side

	Number of Milling Ends Number of Milling Ends

	1
	2

	End Mill Type End Mill Type

Center Cutting

	Helix Angle Helix Angle

	Flute Type Flute Type

Spiral

Straight

	Flute Spacing Flute Spacing

Equal

Variable

	Individual/Set Individual/Set

	Individual

	Shank Type Shank Type

	Round

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

RoHS Compliant

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

DFARS Specialty Metals
COTS-Exempt

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

REACH Compliant

	Taper End Style Taper End Style

Square End

Ball End

	Cut Radius Cut Radius

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962 Products

End Mills and Milling Cutters

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.

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.

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 Nickel

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

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 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.

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.

Carbide Ball End Mills

Carbide Ball 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 Ball End Mills for Stainless Steel and Titanium

With a wear-resistant titanium-aluminum-nitride (TiAlN) coating, these end mills provide excellent shearing and chip removal in stainless steel and titanium.

High-Speed Steel Tapered Square End Mills

Use these end mills for general purpose work in most material, such as aluminum, brass, bronze, iron, and steel. Also known as taper degree end mills, they're often used to machine angled slots in dies and molds.

Carbide Tapered Square End Mills

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. Also known as taper degree end mills, they're often used to machine angled slots in dies and molds.

Carbide Tapered Ball End Mills

These tools have a tapered profile and rounded cutting edge for making smooth contours on intricate, three-dimensional shapes. They're also known as taper degree end mills. 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 Rounded-Edge 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. Often used for slotting and pocketing cuts in mold and die making, these end mills have a 90° profile and rounded corners, which reduce flute breakage and chipping.

Carbide Corner-Rounding 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 and cobalt steel for the longest life and best finish on hard material. Use them to round sharp corners on the edge of your workpiece.

Carbide Dovetail End Mills for O-Rings

Create dovetail grooves that allow O-rings to flex without falling out of place.

Router Bits

Flush-Trimming Router Bits

Cut layers of material flush to one another. All bits have a pilot to guide cuts.

Slotting Router Bits

With a ball-bearing pilot and wide cutting wings, these bits cut straight and smooth slots into wood.

Thread Mills

Cut a range of thread sizes with a single tool. These thread mills can also produce both right-hand and left-hand threads.

End Mills and Milling Cutters

Carbide Square End Mills

Carbide Square End Mills forStainless Steel and Titanium

Carbide Square End Mills forAluminum, Brass, and Bronze

Fast-Cutting Carbide Square EndMills for Aluminum, Brass, and Bronze

Roughing Carbide Square End Millsfor Aluminum, Brass, and Bronze

Carbide Square End Mills for CarbonFiber, Fiberglass, and Graphite

Carbide Square End Mills for Nickel

High-Speed Steel Square End Mills

Roughing High-Speed Steel Square End Mills

High-Speed Steel Square End Millsfor Aluminum, Brass, and Bronze

High-Speed Steel Square EndMills with Two Milling Ends

Roughing Cobalt Steel Square EndMills for Aluminum, Brass, and Bronze

Carbide Ball End Mills

Carbide Ball End Mills for CarbonFiber, Fiberglass, and Graphite

Carbide Ball End Mills for Stainless Steel and Titanium

High-Speed Steel Tapered Square End Mills

Carbide Tapered Square End Mills

Carbide Tapered Ball End Mills

Carbide Rounded-Edge Square EndMills for Stainless Steel and Titanium

Carbide Corner-Rounding EndMills with Two Milling Ends

Carbide Dovetail End Mills for O-Rings

Router Bits

Flush-Trimming Router Bits

Slotting Router Bits

Thread Mills

Thread Mills

Carbide Square End Mills for
Stainless Steel and Titanium

Carbide Square End Mills for
Aluminum, Brass, and Bronze

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

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

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

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

High-Speed Steel Square End
Mills with Two Milling Ends

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

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

Carbide Rounded-Edge Square End
Mills for Stainless Steel and Titanium

Carbide Corner-Rounding End
Mills with Two Milling Ends