Reduced-Shank End Mills | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	Mill Diameter Mill Diameter

	Cut Style Cut Style


Square	Flat Surface

T-Slot	Ball

Corner Rounding	Keyseat

Convex Radius	Drill/Mill

Double Chamfer	Dovetail

Chamfer	Concave Radius

	Shank Diameter Shank Diameter

	Number of Flutes Number of Flutes


2	3

4	5

6	8

	For Use On For Use On

	Material Material

	Finish Finish

Uncoated

Titanium Nitride (TiN) Coated

Black Oxide

Titanium Carbonitride (TiCN)
Coated

	Length of Cut Length of Cut

	Overall Length Overall Length

	End Mill Type End Mill Type

Center Cutting

Noncenter Cutting

	Mill Thickness Mill Thickness

	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

	Cut Radius Cut Radius

	Flute Type Flute Type

Spiral

Straight

	Helix Angle Helix Angle

30°

36°

38°

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

REACH Compliant

	Neck Diameter Neck Diameter

	For T-Slot Bolt Size For T-Slot Bolt Size

	Neck Length Neck Length

	Head Diameter Head Diameter

	Cutting Angle Cutting Angle

632 Products

End Mills and Milling Cutters

High-Speed Steel Square End Mills

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

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.

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.

Replaceable Carbide-Insert Square 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.

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.