Cobalt Steel End Mills | McMaster-Carr

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	Material Material	Show

Cobalt Steel

	Material Material	Hide

	System of Measurement System of Measurement

Inch

Metric

	Mill Diameter Mill Diameter

	Cut Style Cut Style


Square	Ball

Rounded-Edge Square	Corner Rounding

Dovetail	Drill/Mill

Keyseat

	Number of Flutes Number of Flutes


2	3

4	5

6	8

	For Use On For Use On

	Shank Diameter Shank Diameter

	Length of Cut Length of Cut

	Number of Milling Ends Number of Milling Ends

	1
	2

	End Mill Type End Mill Type

Center Cutting

Noncenter Cutting

	Overall Length Overall Length

	Corner Cut Radius Corner Cut Radius

	Finish Finish

Titanium Carbonitride (TiCN)
Coated

Titanium Nitride (TiN) Coated

Uncoated

	Shank Type Shank Type

	Round

	Individual/Set Individual/Set

	Individual

	Helix Angle Helix Angle

	Flute Type Flute Type

Spiral

Straight

	Flute Spacing Flute Spacing

Equal

	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

	Cut Radius Cut Radius

	Flute Pitch Flute Pitch

450 Products

End Mills and Milling Cutters

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.

Cobalt Steel Ball End Mills with Two Milling Ends

Cobalt Steel Rounded-Edge Square End Mills

Made of cobalt steel, these end mills have good heat and wear resistance, so they can run at high speeds in hard material. Often used for slotting and pocketing cuts in mold and die making, they have a 90° profile and rounded corners, which reduce flute breakage and chipping.

Cobalt Steel Corner-Rounding End Mills

With better heat and wear resistance than high-speed steel, these cobalt steel end mills run at higher speeds and provide better performance on hard material. They have scooped corners for rounding the sharp edges of your workpiece.

Cobalt Steel Dovetail End Mills

With better heat and wear resistance than high-speed steel, these cobalt steel dovetail cutters run at higher speeds and provide better performance on hard material. Use them to create dovetail slots for connecting two components with a sliding fit.

Cobalt Steel Drill/Mill End Mills

Made of cobalt steel, these end mills have good heat and wear resistance, so they can run at high speeds in hard material. A 90° pointed tip allows them to be used for drilling as well as for slotting, profiling, chamfering, and spotting cuts.

Cobalt Steel Straight-Tooth Keyseat End Mills

With better heat and wear resistance than high-speed steel, these cobalt steel keyseat cutters can run at higher speeds and provide better performance on hard material. They mill precise notches in rotary shafts to fit machine keys and can also be used for slot milling.