Roughing End Mills | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	Mill Diameter Mill Diameter

	Cut Style Cut Style


Square	Flat Surface

Face Milling

	For Use On For Use On

	Number of Flutes Number of Flutes


2	3

4	5

6	8

	Length of Cut Length of Cut

	Material Material

	Finish Finish

Uncoated

Titanium Carbonitride (TiCN)
Coated

Titanium Aluminum Nitride
(TiAlN) Coated

Titanium Nitride (TiN) Coated

Black Oxide

Aluminum Titanium Nitride
(AlTiN) Coated

Titanium Diboride (TiB2)
Coated

	Shank Diameter Shank Diameter

	Overall Length Overall Length

	End Mill Type End Mill Type

Noncenter Cutting

Center Cutting

	Flute Pitch Flute Pitch

Coarse

Fine

	Shank Type Shank Type


Round	R8 Taper

	Helix Angle Helix Angle

	Individual/Set Individual/Set


Individual	Set

	Flute Spacing Flute Spacing

Equal

Variable

	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

	Insert Shape Insert Shape


Octagon	Square

Round

	Head Diameter Head Diameter

	Arbor Hole Diameter Arbor Hole Diameter

	Mill Thickness Mill Thickness

315 Products

Milling, Routing, and Turning

Cobalt Steel Square End Mills

With better heat and wear resistance than high-speed steel, cobalt steel end mills can run at higher speeds and provide better performance on hard material.

Carbide Square End Mills

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. Their extreme hardness means they are brittle, so a highly rigid setup, such as a CNC machine, is necessary to prevent the end mill from breaking.

High-Speed Steel Square End Mills

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

Fly Cutters

These end mills clamp onto tool blanks to machine flat surfaces. As the cutter rotates, the tool blank creates a wide, shallow cut on the face of the workpiece.

Arbor-Mount Milling Cutters

Use these milling cutters with an arbor to make horizontal cuts.

End Mill and Milling Cutter Sets

Keep multiple sizes of end mills on hand so you have the right size when you need it.

Replaceable Carbide-Insert Flat-Surface Cutters

Also known as fly cutters, these tools create a wide, shallow cut on the face of the workpiece. They're often used to level spoilboard so that it lies perfectly flat for accurate routing and milling.