Round Collets | McMaster-Carr

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	Face Type Face Type

	Round

	Shank Type Shank Type

	Round

	System of Measurement System of Measurement

Inch

	Collet Size Collet Size

	Collet Type Collet Type


R8	5C

ER-32	ER-16

ER-20	ER-25

Hand-Held Grinder	16C

ER-11	3J

100-TG

	For Holding For Holding

	Grip Range Grip Range

	Overall Length Overall Length

	For Use With For Use With

Grinders for Bits and Burs

Lathes

Milling Machines

	Material Material

Steel

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

DFARS Specialty Metals
COTS-Exempt

	Maximum Body Diameter Maximum Body Diameter

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

	Approximate Diameter Compression Approximate Diameter Compression

1/64"

1/32"

	Body Diameter Body Diameter

0.95"

1 1/4"

1.89"

	Internal Thread Size Internal Thread Size

7/16"-20

1.041"-24

1 11/16"-20

	Specifications Met Specifications Met

ISO

DIN

	External Thread Size External Thread Size

1.238"-20

1.988"-20

M47.5

	For Manufacturer Model Number For Manufacturer Model Number

	Manufacturer Manufacturer

	Collet Sizes Included Collet Sizes Included

	Number of Pieces Number of Pieces

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

RoHS Compliant

RoHS Compliant with
Exemptions

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

REACH Compliant

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350 Products

Fabricating and Machining

R8 Collets

Use these collets to securely hold round-shank tool bits in the R8 spindle of a milling machine.

ER-32 Collets

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

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.

ER-16 Collets

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

ER-20 Collets

Install into an ER-20 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-11 Collets

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

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.

100-TG Collets

Install into a 100-TG collet chuck or holder to tightly grip round-shank tool bits in milling machines.

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.

R8 Collet Sets

Use these collets to securely hold round-shank tool bits in the R8 spindle of a milling machine.

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.

Collets for Air-Powered Bit and Bur Grinders

Collets for Dremel Bit and Bur Grinders

Collets for Electric Bit and Bur Grinders

Expanding-End Lathe Mandrel Sets

The mandrels in these sets have an expanding screw that widens the end of the mandrel for a tight hold on the inside of a workpiece.

Expanding-End Lathe Mandrels

An expanding screw widens the end of the mandrel for a tight hold on the inside of a workpiece.