3/16" Tube Adapters | McMaster-Carr

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	System of Measurement System of Measurement

Inch

Metric

	For Tube OD For Tube OD	Show

3/16"

	For Tube OD For Tube OD	Hide

	Thread Size Thread Size

	Thread Type Thread Type

UN/UNF (SAE Straight)

Universal

	Pipe Size Pipe Size

1/16

1/8

1/4

	Shape Shape


45° Elbow	90° Elbow

Cross	Straight

Tee	Wye

	Type Type


Adapter	Connector

Nut	Reducer

Sleeve	Tube Support

	Connection Style Connection Style

	Material Material

	For Tube Material For Tube Material

	For Use With For Use With

	Gender Gender

Male

Female

	Dash Size Dash Size

	Connection Type Connection Type


Hose	Pipe

Tube

	Maximum Pressure Maximum Pressure

	Flared Angle Flared Angle

37°

45°

	Minimum Temperature Minimum Temperature

	Maximum Temperature Maximum Temperature

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

RoHS Compliant

RoHS Compliant with
Exemptions

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

DFARS Specialty Metals
COTS-Exempt

	Specifications Met Specifications Met

	Flared Connection Type Flared Connection Type

	Standard

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

REACH Compliant

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259 Products

How to Identify and Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

37° Flared Fittings for Stainless Steel Tubing

Also known as JIC (Joint Industrial Council) fittings, these provide a tight metal-to-metal seal on stainless steel tubing that is flared to 37°.

Sleeves for 37° Flared Fittings
for Stainless Steel Tubing

Yor-Lok Fittings for Stainless Steel Tubing

Use these fittings at pressures up to 9,700 psi. Also known as instrumentation fittings, they are made to tight tolerances for use in high-precision applications. They are compatible with Swagelok®, Let-Lok, and Parker A-Lok fittings.

Tube Supports for Yor-Lok Fittings

Use with soft plastic tubing to prevent the tube from collapsing.

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.

Precision Compression Fittings
for Stainless Steel Tubing

Tube Fittings for Copper and Brass Tubing

45° Flared Fittings for Copper and Brass Tubing

No sleeve is required to assemble these fittings, which makes for a faster, more convenient installation compared to 37° flared fittings. They are also known as refrigeration and SAE fittings.

37° Flared Fittings for Copper Tubing

Also known as JIC (Joint Industrial Council) fittings, these connect to tubing that is flared to 37°. They can handle higher pressures than 45° flared fittings.

Compression Fittings for Copper Tubing

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.

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.

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.

Yor-Lok Fittings for Copper Tubing

Drill-and-Install Push-to-Connect
Fittings for Copper and Brass Tubing

Create a push-to-connect junction in equipment with these fittings. To install, drill a stepped hole in your surface, push the fitting components into place, then insert your tubing.

Tube Fittings for Steel Tubing

Compression Fittings for Steel Tubing

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

Yor-Lok Fittings for Steel Tubing

These fittings have two sleeves for extra gripping power. They bite into steel tubing as you tighten the nut to form a strong seal.

Nuts for Yor-Lok Fittings for Steel Tubing

Front and Back Sleeves for
Yor-Lok Fittings for Steel Tubing

Tight-Space 37° Flared Fittings for Aluminum Tubing

The external hex bolt on these fittings allows for easy installation in cramped spaces. They are also known as banjo-style fittings and JIC (Joint Industrial Council) fittings. They provide a tight seal on tubing that is flared to 37°.

Tube Fittings for Plastic and Rubber Tubing

Push-to-Connect Tube Fittings for Air

Nickel-Plated Brass Push-to-Connect
Tube Fittings for Air

Made of nickel-plated brass, these fittings have better corrosion resistance than unplated brass fittings.

Brass Push-to-Connect Tube Fittings for Air

Made of brass, these fittings have good corrosion resistance.

Stainless Steel Push-to-Connect
Tube Fittings for Air and Water

A 316 stainless steel body gives these fittings the best corrosion resistance of all our metal push-to-connect tube fittings.

Moisture-Resistant Push-to-Connect
Tube Fittings for Air and Water

These fittings won’t absorb moisture, so they’re good for water and high-humidity air applications.

Universal-Thread Moisture-Resistant
Push-to-Connect Tube Fittings for Air and Water

The threads on these fittings mate with NPT, NPTF, BSPT, and BSPP threads.

Low-Temperature/High-Pressure D.O.T.
Push-to-Connect Tube Fittings for Air

Use at pressures up to 250 psi.

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.

Push-to-Connect Tube Fittings for Drinking Water

These fittings keep their strength in moist environments and meet NSF/ANSI 61 for drinking water. Also known as instant fittings.

Couplers for High-Pressure Fill Valves

Compression Flow-Control Orifices

Compression fittings bite down on the outside of hard metal tubing for a secure connection.