Lathe Collets | McMaster-Carr

	Face Type Face Type


Round	Machine Your Own

Hexagon	Machine Your Own Inside Grip

Square

	System of Measurement System of Measurement

Inch

Metric

	Size Size

	Collet Type Collet Type


5C	16C

3J	ER-32

ER-16	ER-20

ER-25	ER-11

	For Holding For Holding

	Material Material

	For Use With For Use With

Lathes

Milling Machines

	Overall Length Overall Length

	Grip Range Grip Range

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

DFARS Specialty Metals
COTS-Exempt

	TIR (Total Indicated Runout) Accuracy TIR (Total Indicated Runout) Accuracy

	Body Diameter Body Diameter

1 1/8"

1 1/4"

1.89"

	External Thread Size External Thread Size

	Internal Thread Size Internal Thread Size

	Maximum Bore Diameter Maximum Bore Diameter

	Head Diameter Head Diameter

1/2"

1 1/2"

2 1/2"

	Diameter Diameter

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

RoHS Compliant

RoHS Compliant with
Exemptions

	Maximum Body Diameter Maximum Body Diameter

	Approximate Diameter Compression Approximate Diameter Compression

1/64"

1/32"

	Face Pilot Hole Diameter Face Pilot Hole Diameter

1/16"

1/2"

	Minimum Machined Diameter Minimum Machined Diameter

0.25"

0.437"

0.75"

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

REACH Compliant

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360 Products

Collets

5C Collets

These collets tightly grip workpieces when installed into a 5C collet chuck or holder. They provide a stronger hold on small workpieces than a standard lathe chuck. Choose from collets that can grip round-, hexagon-, or square-shaped workpieces.

16C Collets

Insert into a 16C collet chuck or holder to tightly grip round workpieces. They provide a stronger hold on small workpieces than a standard lathe chuck.

3J Collets

When installed into a 3J collet chuck or holder, these collets securely grip round workpieces. They provide a stronger hold on small workpieces than a standard lathe chuck.

ER-32 Collets

Install into an ER-32 collet chuck or holder to tightly grip round-shank tool bits in milling machines.

ER-16 Collets

Install into an ER-16 collet chuck or holder to tightly grip round-shank tool bits in milling machines.

ER-25 Collets

Use these collets in milling machines that have an ER-25 collet chuck. With a round face and adjustable body, they compress to grip round-shank drill bits, end mills, reamers, and taps.

ER-20 Collets

Install into an ER-20 collet chuck or holder to tightly grip round-shank tool bits in milling machines.

ER-11 Collets

Install into an ER-11 collet chuck or holder to tightly grip round-shank tool bits in milling machines.

Machine-Your-Own Inside-Grip 5C Collets

The head on these collets acts like a mandrel to support the inside of a hollow workpiece. It can be machined to fit the exact ID of your part.

Machine-Your-Own 5C Collets

Also known as emergency collets, these collets have a machinable face for boring an opening to the exact size and shape you need.

Machine-Your-Own 3J Collets

When installed into a 3J collet chuck or holder, these collets securely grip workpieces.

Machine-Your-Own 16C Collets

Insert into a 16C collet chuck or holder to tightly grip workpieces.

Large-Diameter Machine-Your-Own 5C Collets

Also known as step collets.

Quick-Change Large-Diameter
Machine-Your-Own 5C Collets

Save time when switching to a new workpiece by changing out the head instead of the entire collet.

5C Collet Sets

These collets tightly grip workpieces when installed into a 5C collet chuck or holder. They provide a stronger hold on small workpieces than a standard lathe chuck.

5C Collet Wrenches

Install and remove 5C collets in CNC lathes.

5C Collet Stands

Adjustable Collet Stops

Ensure parts don't push back into the collet while machining.

Quick-Change Lathe Tool Posts and Tool Holders

Square- and Round-Shank Tool Holders
for Quick-Change Lathe Tool Posts

A V-groove enables these holders to grip round-shank as well as square-shank tools.

Square-Shank Tool Holders for
Quick-Change Lathe Tool Posts

Grip square-shank lathe tools.

Rigid-Hold Round-Shank Tool Holders
for Quick-Change Lathe Tool Posts

Four flat head screws lock down round-shank tools in a precision-ground bore for increased rigidity over other round-shank tool holders.

5C Collet Holders for Quick-Change Lathe Tool Posts

These holders work with any 5C collet to rigidly grip drill bits, taps, end mills, and other tools.

Quick-Change Lathe Tool Posts

Two slide-in dovetail mounts on the tool posts allow you to quickly change from one tool holder to another.

Drill Chuck Holders for Quick-Change Lathe Tool Posts

A built-in drill chuck allows quick installation of drill bits, taps, and other round- or hex-shank tools into a quick-change tool post.

Morse Taper Holders for
Quick-Change Lathe Tool Posts

Mount any tool with a Morse taper shank to a quick-change tool post.

Lathe Chucks

Lathe Chuck to 5C Collet Adapters

When a job calls for a 5C collet, save time by using an adapter instead of removing your lathe chuck.

5C Collet to Lathe Chuck Adapters

No need to break down a collet set up when a workpiece doesn't fit a 5C collet. Install one of these lathe chuck adapters in your 5C collet chuck or holder and its three jaws will securely grasp the workpiece.

Collets

5C Collets

16C Collets

3J Collets

ER-32 Collets

ER-16 Collets

ER-25 Collets

ER-20 Collets

ER-11 Collets

Machine-Your-Own Inside-Grip 5C Collets

Machine-Your-Own 5C Collets

Machine-Your-Own 3J Collets

Machine-Your-Own 16C Collets

Large-Diameter Machine-Your-Own 5C Collets

Quick-Change Large-DiameterMachine-Your-Own 5C Collets