Sleeve Couplings | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	For Shaft Diameter For Shaft Diameter

	For Shaft Type For Shaft Type

	Keyed
	Round
	Square
	Hex

	Material Material

	For Shaft Misalignment Type For Shaft Misalignment Type


Angular	Axial

Parallel	None

	OD OD

	For Tube OD For Tube OD

	Shaft Mount Type Shaft Mount Type


Set Screw	Clamp On

Press Fit

	Construction Construction


Multipiece	Two Piece

	Length Length

	For Motion Type For Motion Type

Continuous

Forward/Reverse

Start/Stop

	Connection Style Connection Style

	Shaft Coupling Type Shaft Coupling Type

Flexible

Rigid

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

DFARS Specialty Metals
COTS-Exempt

	For Tube Material For Tube Material

	Type Type


Adapter	Connector

Reducer

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

RoHS Compliant

RoHS Compliant with
Exemptions

	Thread Type Thread Type

UN/UNF (SAE Straight)

NPTF

	Pipe Size Pipe Size

	Number of Set Screws Included Number of Set Screws Included

	For Use With For Use With

	Fabrication Fabrication

Cast

Sintered

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

REACH Compliant

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823 Products

About Shaft Couplings

High-Speed Vibration-Damping Flexible Shaft Couplings

Use these gear-shaped couplings for high-speed and high-torque applications.

Lightweight Flexible Shaft Couplings

Made with lightweight nylon sleeves, these gear couplings require less energy to move than other high-torque flexible couplings. They compensate for parallel, angular, and axial misalignment.

Ultra-High-Torque Flexible Shaft Couplings

With a rigid gear design, these steel couplings transmit more torque than other couplings of the same size.

Two-Piece Shaft Couplings

Install and remove these shaft couplings without disconnecting the shafts, motors, and other attached components—they’re made in two pieces so you don’t need to slide them onto shaft ends. They’re also useful when you have limited access to the ends of the shafts.

Compression Fittings for Copper Tubing

Nickel-Plated Brass Compression
Fittings for Copper Tubing

With a nickel-plated finish, these compression fittings resist corrosion better than plain brass fittings.

Vibration-Resistant Compression
Fittings for Copper Tubing

The sleeve in these fittings is rubber instead of metal, so it cushions the tubing and absorbs vibration while creating a tight seal.

Quick-Assembly Compression
Fittings for Copper Tubing

These fittings include a nut with a built-in sleeve, so there’s no need to remove the nut for assembly.

Precision Compression Fittings for Copper Tubing

Also known as instrumentation fittings, these are made to tighter tolerances than standard compression fittings. They are compatible with Parker CPI fittings.

Tube Fittings for Steel Tubing

High-Pressure Compression Fittings for Steel Tubing

Thicker walls make these fittings—sometimes called flareless or bite fittings—withstand about twice as much pressure as standard compression fittings, so they’re good for hydraulic power applications.

Compression Fittings for Steel Tubing

A single sleeve (ferrule) bites into tubing as you tighten the nut, creating a strong seal.

Vibration-Resistant Compression
Fittings for Steel Tubing

O-Ring Face Seal Fittings for Steel Tubing

A tube adapter sits flush against the flat face of the fitting so you can slide the steel tubing and fitting sideways to disconnect in cramped spaces. Also known as zero-clearance fittings.

Compression Fittings for Stainless Steel Tubing

High-Pressure Compression
Fittings for Stainless Steel Tubing

The thick walls of these fittings can withstand more than twice the pressure of standard compression fittings.

Precision Compression Fittings
for Stainless Steel Tubing

Vibration-Resistant Compression
Fittings for Stainless Steel Tubing

Instead of a metal sleeve (ferrule), these fittings have a rubber sleeve that cushions tubing and absorbs vibration to maintain a tight seal, even when connected to large pumps.

Compression Fittings for Stainless Steel Tubing

A single sleeve (ferrule) bites into tubing as you tighten the nut, creating a strong seal. The nut and sleeve are included.

Tube Fittings for Plastic and Rubber Tubing

Tight-Seal Brass Compression
Tube Fittings for Air and Water

A built-in tube support slips inside the tubing to prevent collapsing and provides a sturdy connection for an extra-tight seal.

D.O.T. Brass Compression Tube Fittings for Air

These compression tube fittings meet Department of Transportation FMVSS 571 safety standards for air brake lines.

Compression Tube Fittings for Food and Beverage

These plastic compression fittings meet NSF/ANSI Standard 51 for food contact.

Quick-Assembly Brass Compression
Tube Fittings for Air and Water

These fittings include a nut with a built-in sleeve (ferrule), so there’s no need to remove the nut for assembly.

Brass Compression Tube Fittings for Air and Water

A single sleeve (ferrule) compresses the tubing as you tighten the nut on these fittings, creating a strong seal. They are brass for good corrosion resistance.