M14 Couplings | McMaster-Carr

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	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size	Show

M14

	Thread Size Thread Size	Hide

	Thread Type Thread Type

UN/UNF (SAE Straight)

	Thread Pitch Thread Pitch

1.25 mm

1.5 mm

2 mm

	Type Type


Connector	Adapter

	Material Material

	Length Length

	Shape Shape


Straight	90° Elbow

	Nut Type Nut Type


Coupling	Hex

	For Use With For Use With

	Gender Gender

Female

Male

	Connection Style Connection Style

	Specifications Met Specifications Met

	Body Shape Body Shape

	Hex

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

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

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

RoHS Compliant

RoHS Compliant with
Exemptions

	Fabrication Fabrication

Machined

	Finish Finish

Black Oxide

Galvanized

Zinc Plated

	Connection Type Connection Type


Pipe	Hose

Tube

	Maximum Pressure Maximum Pressure

	For Hose ID For Hose ID

	Pipe Size Pipe Size

1/8

1/4

3/8

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

REACH Compliant

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67 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.

About Nuts, Materials, and Finishes

About Hose

Extreme-Pressure Stainless Steel Threaded Pipe Fittings

With the strength to handle extreme pressures, these fittings can be used to connect equipment in hydraulic fluid lines. 316 stainless steel fittings have excellent corrosion resistance. BSPP and metric male threads have either a gasket or a gasket and washer to prevent leaks. UN/UNF (SAE Straight) threads are also known as O-ring boss threads; the male threads have a gasket to prevent leaks.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Female × Male

Straight Adapter

BSPP and Metric
Male Threads with
Gasket and Washer

BSPP, Metric, and
UN/UNF (SAE Straight)
Male Threads with Gasket

Specifications Met: See table
For Use With: See table

								316 Stainless Steel
Pipe Size (A)	Thread Size (A)	Dash Size (A)	Thread Size (B)	Dash Size (B)	Max. Pressure	For Use With	Specifications Met		Each
NPT Female × Metric Male
1/4	__	04	M14 × 1.5 mm	__	5,000 psi @ 72° F	Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 9974	00000000	000000
Metric Female × UN/UNF (SAE Straight) Male
__	M14 × 1.5 mm	__	9/16"-18	06	6,000 psi @ 72° F	Hydraulic Fluid (Petroleum Base), Oil, Water	__	000000000	00000
UN/UNF (SAE Straight) Female × Metric Male
__	9/16"-18	06	M14 × 1.5 mm	__	5,000 psi @ 72° F	Hydraulic Fluid (Petroleum Base), Oil, Water	__	000000000	00000

Straight Adapters, Male

Front

BSPP and Metric
Male Threads with
Gasket and Washer

For Use With: See table
Specifications Met: See table

						316 Stainless Steel
Pipe Size (A)	Dash Size (A)	Thread Size (B)	Max. Pressure	For Use With	Specifications Met		Each
BSPP Male × Metric Male
1/8	02	M14 × 1.5 mm	5,000 psi @ 72° F	Hydraulic Fluid, Oil, Water	DIN 7631, ISO 1179, ISO 8434-6, ISO 9974	00000000	000000
1/4	04	M14 × 1.5 mm	5,000 psi @ 72° F	Hydraulic Fluid, Oil, Water	DIN 7631, ISO 1179, ISO 8434-6, ISO 9974	00000000	00000

Replacement Washers

Temperature Range: -22° to 230° F

			316 Stainless Steel
For Pipe Size	For Thread Size	Gasket Material	Thickness		Each
For BSPP Male
1/8	__	Buna-N Rubber	2mm	00000000	00000
1/4	__	Buna-N Rubber	2.03mm	00000000	0000
For Metric Male
__	M14	Buna-N Rubber	1.5mm	00000000	0000

Compact Extreme-Pressure Steel Threaded Pipe Fittings

These fittings are strong enough to handle extreme pressures, yet small enough to fit into cramped spaces. They are galvanized steel, which has fair corrosion resistance. BSPP and metric male threads have either a gasket, or a gasket and washer, to prevent leaks.

For technical drawings and 3-D models, click on a part number.

Straight Connectors, Female

For Use With:
NPTF: Air, Hydraulic Fluid, Water
Metric: Air, Hydraulic Fluid, Oil, Water
Specifications Met:
NPTF: ASTM A108
Metric: DIN 7631, ISO 6149, ISO 9974

Metric Female
Thread Size	Max. Pressure		Each
M14 × 1.5 mm	4,500 psi @ 72° F	00000000	000000

Straight Adapters, Female × Male

BSPP and Metric
Male Threads with
Gasket and Washer

For Use With: See table
Specifications Met: See table

NPT Female × Metric Male
Pipe Size (A)	Thread Size (A)	Dash Size (A)	Pipe Size (B)	Thread Size (B)	Dash Size (B)	Max. Pressure	For Use With	Specifications Met		Each
1/4	__	04	__	M14 × 1.5 mm	__	4,500 psi @ 72° F	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 2353, ISO 8434-1	00000000	00000
Metric Female × NPT Male
__	M14 × 1.5 mm	__	1/4	__	04	6,000 psi @ 72° F	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	00000000	00000
__	M14 × 1.5 mm	__	3/8	__	06	5,500 psi @ 72° F	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974	00000000	00000

Straight Adapters, Male

BSPP, Metric, and UN/UNF
(SAE Straight) Male
Threads with Gasket and Washer

For Use With: See table
Specifications Met: See table

NPT Male × Metric Male
Pipe Size (A)	Dash Size (A)	Thread Size (B)	Max. Pressure	For Use With	Specifications Met		Each
1/4	04	M14 × 1.5 mm	6,000 psi @ 72° F	Air, Hydraulic Fluid, Oil, Water	ASME B1.20.3, DIN 2353, ISO 8434-1	00000000	000000
BSPP Male × Metric Male
1/8	02	M14 × 1.5 mm	5,000 psi @ 72° F	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 1179, ISO 6149, ISO 8434-6, ISO 9974	00000000	00000
1/4	04	M14 × 1.5 mm	6,000 psi @ 72° F	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 1179, ISO 6149, ISO 8434-6, ISO 9974	00000000	00000
3/8	06	M14 × 1.5 mm	5,500 psi @ 72° F	Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water	DIN 7631, ISO 1179, ISO 6149, ISO 8434-6, ISO 9974	00000000	00000

Replacement Washers

Temperature Range: -20° to 230° F

For BSPP Male
For Pipe Size	For Thread Size	Gasket Material	Thickness		Each
1/8	__	Buna-N Rubber	2mm	00000000	00000
1/4	__	Buna-N Rubber	2.03mm	00000000	000
3/8	__	Buna-N Rubber	2mm	00000000	000
For Metric Male
__	M14	Buna-N Rubber	1.5mm	00000000	0000

High-Pressure Brass Threaded Pipe Fittings

These fittings have the strength to handle high-pressure applications. They are brass for good corrosion resistance.

NPTF (Dryseal) threads are compatible with NPT threads.

For technical drawings and 3-D models, click on a part number.

Straight Adapters with Gasket, Female × Male

Metric Male Threads with Gasket

For Use With: Air, Water, Natural Gas, Oil
Specifications Met: SAE J530, SAE J531

NPTF Female × Metric Male
Pipe Size	Thread Size	Max. Pressure	Male End Gasket Material		Each
1/8	M14 × 1.5 mm	1,000 psi @ 72° F	Fluorocarbon Rubber	000000000	000000
1/4	M14 × 1.5 mm	1,000 psi @ 72° F	Fluorocarbon Rubber	00000000	00000

Metal Barbed Hose Fittings for Air and Water

Slide the barbed end into rubber hose and secure with the appropriate clamp or crimp-on hose ferrule.

Brass fittings are softer than other metal fittings, so they’re easier to thread together. Plain brass fittings have good corrosion resistance.Aluminum fittings are lighter in weight than other metal fittings. They have good corrosion resistance.

Stainless steel fittings have very good corrosion resistance. 303 stainless steel fittings won’t rust when exposed to water, making them good for areas that require frequent cleanings. Fittings with a threaded end are also known as hose nipples.

Metric, UN/UNF (SAE Straight), and BSPP male threads with gasket protect against leaks.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Hose × Metric Male Threaded Pipe

NPT/NPTF, Metric, BSPP, and
UN/UNF (SAE Straight)
Male Threads with Gasket

Maximum Pressure: See table
Maximum Vacuum: 27 in. of Hg @ 72° F
Temperature Range: See table
Attachment Type: See table
Specifications Met: See table

Brass
For Hose ID	Thread Size	Gasket Material	Max. Pressure	Temperature Range, °F	Attachment Type	Pkg. Qty.		Pkg.
1/4"	M14 × 1.5 mm	Buna-N Rubber	300 psi @ 72° F	-30° to 200°	Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule	1	00000000	000000
3/8"	M14 × 1.5 mm	Buna-N Rubber	300 psi @ 72° F	-30° to 200°	Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule	1	00000000	00000
1/2"	M14 × 1.5 mm	Buna-N Rubber	300 psi @ 72° F	-30° to 200°	Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule	1	00000000	00000
12mm	M14 × 1.5 mm	Buna-N Rubber	250 psi @ 72° F	-30° to 200°	Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule	1	00000000	00000
Aluminum
3/8"	M14 × 1.5 mm	Buna-N Rubber	125 psi @ 72° F	-30° to 200°	Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule	1	00000000	00000
1/2"	M14 × 1.5 mm	Buna-N Rubber	125 psi @ 72° F	-30° to 200°	Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule	1	00000000	00000
12mm	M14 × 1.5 mm	Buna-N Rubber	125 psi @ 72° F	-30° to 200°	Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule	1	00000000	00000
303 Stainless Steel
3/8"	M14 × 1.5 mm	Buna-N Rubber	125 psi @ 72° F	-30° to 200°	Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule	1	00000000	00000
1/2"	M14 × 1.5 mm	Buna-N Rubber	125 psi @ 72° F	-30° to 200°	Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule	1	00000000	00000
10mm	M14 × 1.5 mm	Buna-N Rubber	125 psi @ 72° F	-30° to 200°	Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule	1	00000000	00000

International Standard ISO Minimal-Spill
Quick-Disconnect Hose Couplings for Hydraulic Fluid

Plug with Male Pipe

Also known as flush-face couplings, the plugs and sockets have a flat face, which allows them to mate close against each other, reducing fluid loss when connecting and disconnecting the line. A complete coupling consists of a plug and a socket (both sold separately) that connect and disconnect quickly. Use them when you need frequent access to a line. All of the International Standard ISO Minimal-Spill quick-disconnect plugs are compatible with any of the International Standard ISO Minimal-Spill quick-disconnect sockets of the same coupling size, regardless of the pipe size. Couplings are compatible with ISO 16028 Parker FEM, ISO 16028 Perfecting HT, and ISO 16028 Snap-Tite 74 couplings. Also known as double shut-off couplings, the plugs and sockets both have a shut-off valve that stops the flow when the coupling is separated. They are zinc-plated steel, which has excellent strength and durability and fair corrosion resistance.

Plugs are also known as nipples.

Note: To ensure a correct fit, make sure that the plug and socket have the same coupling size. Pressure ratings are given for static (constant) pressure conditions.

Warning: Never attempt to connect or disconnect couplings when operating at maximum pressure. Stop the flow before you disconnect the line.

For technical drawings and 3-D models, click on a part number.

Plugs, Metric Male Threaded Pipe

Maximum Pressure: See table
Temperature Range: -20° to 212° F
Compatible With: ISO 16028 Parker FEM, ISO 16028 Perfecting HT, ISO 16028 Snap-Tite 74
Specifications Met: ISO 16028

Plugs
	Plug Tip		Thread						Optional Dust Caps
Coupling Size	Lg.	Dia.	Size	Pitch, mm	Dash Size	Max. Pressure		Each		Each
Zinc-Plated Steel
1/4	1/4"	5/8"	M14	1.5	04	7,200 psi @ 72° F	0000000	000000	0000000	00000

Push-On Barbed Hose Fittings for Hydraulic Fluid

These fittings have sharp barbs to grip rubber push-on hose with no clamps or ferrules required. The more you pull on the fittings, the tighter the hose will grip. Use them in low-pressure hydraulic applications up to 350 psi. Also known as hose nipples, they adapt a barbed end to a threaded end, so you can connect to pumps, cylinders, and other equipment in your hydraulic system. Fittings are zinc-plated steel, which has excellent strength and durability. Fittings have fair corrosion resistance.

Fittings that swivel until tightened rotate 360° for easy installation.

Note: To ensure proper connection, the barbed end has to be pushed in all the way, with the hose end concealed by the ring.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Hose × Metric Male Threaded Pipe

Maximum Pressure: 350 psi @ 72° F
Maximum Vacuum: 28 in. of Hg @ 72° F
Temperature Range: -40° to 155° F
For Hose Manufacturer Series: Parker 801

Fittings
		Thread		Ring Stop					10-ft. Hose
For Hose ID	Dash Size	Size	Pitch, mm	Material	Color	Manufacturer Series		Each		Each
Zinc-Plated Steel
1/4"	04	M14	1.5	Plastic	Yellow	Parker 82	00000000	000000	0000000	000000

Straight Adapters (Swivels Until Tightened), Hose × Metric Female Threaded Pipe

Maximum Pressure: See table
Maximum Vacuum: 28 in. of Hg @ 72° F
Temperature Range: -40° to 155° F
For Hose Manufacturer Series: Parker 801

Fittings
		Thread		Ring Stop						10-ft. Hose
For Hose ID	Dash Size	Size	Pitch, mm	Material	Color	Max. Pressure	Manufacturer Series		Each		Each
Zinc-Plated Steel
1/4"	04	M14	1.5	Plastic	Yellow	350 psi @ 72° F	Parker 82	00000000	000000	0000000	000000

Metal Barbed Hose Fittings for Chemicals and Petroleum

Made of 316 stainless steel, these fittings have the corrosion resistance to stand up to a wide variety of chemicals, as well as fuels, gasoline, and oils. To connect, slide the barbed end into plastic or rubber hose and secure with a clamp.

Adapters are also known as hose nipples; they adapt a barbed end to a threaded end.

Metric and UN/UNF (SAE Straight) male threads have a gasket to protect against leaks.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Hose × Metric Male Threaded Pipe

For Use With: See table
Maximum Pressure: See table
Temperature Range: -40° to 300° F
Attachment Type: Use Band-and-Buckle Clamps

	Thread
For Hose ID	Size	Pitch, mm	Gasket Material	Max. Pressure	For Use With		Each
316 Stainless Steel
3/4"	M14	1.5	Fluoroelastomer Rubber	125 psi @ 72° F	Acetone, Diesel Fuel, Ethanol, Fuel Oil, Gasoline, Mineral Oil, Mineral Spirits, Vegetable Oil	000000000	000000
8mm	M14	1.5	Fluoroelastomer Rubber	125 psi @ 72° F	Acetone, Diesel Fuel, Ethanol, Fuel Oil, Gasoline, Mineral Oil, Mineral Spirits, Vegetable Oil	000000000	00000

Beaded Hose Fittings for Coolant

A single rounded bead grips onto hose just like a barb, but has no sharp edges that could cut or damage soft hose. This type of connection can handle higher pressures than standard barbed fittings for coolant. Slide the beaded end into rubber hose and secure with a clamp. Also known as hose nipples, they adapt a beaded end to a threaded end. Fittings are zinc-plated steel, which is strong and durable with fair corrosion resistance.

For technical drawings and 3-D models, click on a part number.

90° Elbow Adapters, Metric Male Threaded Pipe

Maximum Pressure: 100 psi @ 72° F
Temperature Range: -20° to 255° F
Attachment Type: Use Worm-Drive Clamps or Band-and-Buckle Clamps
Specifications Met: SAE J1231

	Thread
For Hose ID	Size	Pitch, mm		Each
Zinc-Plated Steel
1/2"	M14	1.5	0000000	000000

Plastic Barbed Tube Fittings for Air and Water

Fittings have barbs that grip onto tubing.

Nylon fittings have excellent impact and abrasion resistance.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Tube × Male Threaded Pipe

Temperature Range: See table
Tubing: Semi-Clear: Use with firm or soft (Durometer 45A-80A) polyurethane rubber or PVC plastic
Opaque: Use with firm or soft (Durometer 40A-80A) polyurethane rubber or PVC plastic

Metric Threads
For Tube ID	Thread Size	Material	Color	Clarity	Max. Pressure	Temp. Range, °F	Pkg. Qty.		Pkg.
8mm	M14 × 1.5 mm	Nylon Plastic	Gray	Opaque	145 psi @ 72° F	-40° to 190°	10	00000000	000000
10mm	M14 × 1.5 mm	Nylon Plastic	Gray	Opaque	145 psi @ 72° F	-40° to 190°	10	00000000	00000

90° Elbow Adapters, Tube × Male Threaded Pipe

Temperature Range: See table
Tubing: Semi-Clear: Use with firm or soft (Durometer 45A-80A) polyurethane rubber or PVC plastic
Opaque: Use with firm or soft (Durometer 40A-80A) polyurethane rubber or PVC plastic

Metric Threads
For Tube ID	Thread Size	Material	Color	Clarity	Max. Pressure	Temp. Range, °F	Pkg. Qty.		Pkg.
8mm	M14 × 1.5 mm	Nylon Plastic	Gray	Opaque	145 psi @ 72° F	-40° to 190°	10	00000000	000000
10mm	M14 × 1.5 mm	Nylon Plastic	Gray	Opaque	145 psi @ 72° F	-40° to 190°	10	00000000	00000

Compression Fittings for Copper Tubing

For Use With: Air, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil, Water
Temperature Range: See Table
Tubing: Use with copper
Specifications Met: See Table

A single sleeve (ferrule) bites into tubing as you tighten the nut, creating a strong seal. The nut and sleeve are included. Fittings are also known as flareless fittings. They are brass for good corrosion resistance.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Tube × Male Threaded Pipe

For Tube
OD	Wall Thick.	Thread Size	Thread Pitch, mm	Material	Max. Pressure	Temp. Range, °F		Each
Metric Threads
10mm	1mm	M14	1.25	Brass	1,080 psi @ 72° F	-40° to 250°	00000000	000000
10mm	1mm	M14	1.5	Brass	1,080 psi @ 72° F	-40° to 250°	00000000	00000

Vibration-Resistant Compression Fittings for Stainless Steel Tubing

For Use With: Acetylene, Air, Butane, Compressed Air, Cutting Oil, Diesel Fuel, Fuel Oil, Gasoline, Helium, Hydraulic Fluid (Petroleum Base), Kerosene, Mineral Oil, Natural Gas, Nitrogen, Propane, Soap Solutions
Temperature Range: -10° to 400° F
Tubing: Use with seamless 316Ti or 321 stainless steel
Specifications Met: DIN 3861

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. However, rubber sleeves can’t withstand temperatures as high as metal ones. To create the strong seal, tighten the included nut. These fittings are made of 316 stainless steel, so they have excellent corrosion resistance. They’re also known as flareless fittings. All meet DIN 3861, which is an international standard for compression tube fitting specifications.

BSPP and metric male threads have a gasket to prevent leaks.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Tube × Male Threaded Pipe

BSPP and Metric
Male Threads with
Gasket and Washer

For Tube
OD, mm	Wall Thickness, mm	Thread Size	Thread Pitch, mm	Material	Gasket Material	Maximum Pressure		Each
Metric Threads
10	1	M14	1.5	316 Stainless Steel	Fluoroelastomer Rubber	4,500 psi @ 72° F	00000000	000000

Nuts

Nut

For Tube
OD, mm	Wall Thickness, mm	Nut Material	Maximum Pressure		Each
10	1	316 Stainless Steel	4,500 psi @ 72° F	00000000	000000

37° Flared Fittings for Steel Tubing

Tubing: Use with seamless steel
Specifications Met: SAE J514

Also known as JIC (Joint Industrial Council) fittings, these provide a tight metal-to-metal seal on tubing that is flared to 37°. They require a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately. Fittings are zinc-plated steel for fair corrosion resistance.

To prevent leaks, UN/UNF (SAE Straight) male threads have a gasket. Metric and BSPP male threads have either a gasket or a gasket and washer.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Male Tube × Male Threaded Pipe

BSPP and Metric
Male Threads with
Gasket and Washer

For Use With: See Table
Temperature Range: See Table

Metric Threads
For Tube OD	Thread Size	Thread Pitch, mm	For Use With	Material	Gasket Material	Washer Material	Max. Pressure	Temp. Range, °F		Each
3/8"	M14	1.5	Air, Fuel Oil, Hydraulic Fluid, Mineral Oil	Zinc-Plated Steel	Buna-N Rubber	__	3,600 psi @ 72° F	-30° to 200°	00000000	000000
3/8"	M14	1.5	Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil	Zinc-Plated Steel	Buna-N Rubber	Zinc-Plated Steel	4,500 psi @ 72° F	-20° to 212°	00000000	00000

Nuts

For Use With: Air, Fuel Oil, Hydraulic Fluid, Mineral Oil
Temperature Range: -60° to 400° F

For Tube OD	Nut Material	Max. Pressure		Each
3/8"	Zinc-Plated Steel	4,000 psi @ 72° F	000000000	00000

Sleeves

For Use With: Air, Fuel Oil, Hydraulic Fluid, Mineral Oil
Temperature Range: -60° to 400° F

Use these sleeves with a nut and fitting to provide a tight metal-to-metal seal on steel tubing that is flared to 37°. Sleeves are zinc-plated steel for fair corrosion resistance. They are also known as ferrules.

Inch × metric sleeve adapters convert the fitting from inch to metric.

For Tube OD
Inch	Metric, mm	Sleeve Material	Max. Pressure		Each
Inch Sleeves
3/8"	__	Zinc-Plated Steel	4,000 psi @ 72° F	000000000	00000
Inch × Metric Sleeve Adapters
3/8"	10	Zinc-Plated Steel	4,000 psi @ 72° F	000000000	0000

Compression Fittings for Steel Tubing

For Use With: Inch: Air, Hydraulic Fluid, Water
Metric: Hydraulic Fluid
Tubing: Inch: Use with welded steel
Metric: Use with seamless steel
Specifications Met: Inch: SAE J514
Metric: ISO 8434, DIN 2353

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

Zinc-plated steel fittings have fair corrosion resistance.

ISO 8434 (formerly DIN 2353) fittings meet international standards for tube fitting pressures.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Tube × Male Threaded Pipe

Temperature Range: See table

For Tube
OD	Wall Thick.	Thread Size	Thread Pitch	Material	Max. Pressure	Temp. Range, °F		Each
Metric Taper Threads
10mm	Not Rated	M14	1.5 mm	Zinc-Plated Steel	3,600 psi @ 72° F	-20° to 230°	00000000	000000

90° Elbow Adapters, Tube × Male Threaded Pipe

Temperature Range: See table

For Tube
OD	Wall Thick.	Thread Size	Thread Pitch	Material	Max. Pressure	Temp. Range, °F		Each
Metric Taper Threads
10mm	Not Rated	M14	1.5 mm	Zinc-Plated Steel	3,600 psi @ 72° F	-20° to 230°	00000000	000000

Nuts

Temperature Range: See table

For Tube OD	Nut Material	Max. Pressure	Temp. Range, °F		Each
10mm	Zinc-Plated Steel	3,600 psi @ 72° F	-20° to 230°	00000000	00000

Sleeves

Temperature Range: See table

For Tube OD	Sleeve Material	Max. Pressure	Temp. Range, °F		Each
10mm	Zinc-Plated Steel	3,600 psi @ 72° F	-20° to 230°	00000000	00000

Vibration-Resistant Compression Fittings for Steel Tubing

Metric Male Threads with Gasket

For Use With: Cutting Oil, Diesel Fuel
Temperature Range: -30° to 250° F
Tubing: Use with seamless steel
Specifications Met: DIN 3861

The sleeve (ferrule) in these fittings is made of rubber instead of metal, so it cushions the tubing and absorbs vibration while creating a tight seal. Fittings are also known as flareless fittings. They are zinc-plated steel for fair corrosion resistance.

Metric male threads have either a gasket or a gasket and washer to prevent leaks.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Tube × Male Threaded Pipe

Metric Male Threads with Gasket

Metric Threads
For Tube OD, mm	Thread Size	Thread Pitch, mm	Material	Gasket Material	Max. Pressure		Each
10	M14	1.5	Zinc-Plated Steel	Buna-N Rubber	7,200 psi @ 72° F	0000000	000000

Nuts

For Tube OD, mm	Nut Material	Max. Pressure		Each
10	Zinc-Plated Steel	7,200 psi @ 72° F	0000000	00000

Metric Low-Strength Steel Coupling Nuts

Often referred to as extension nuts, use these to connect and extend threaded rods. They're about half the strength of medium-strength steel coupling nuts for use in light duty fastening applications.

Zinc-plated steel coupling nuts resist corrosion in wet environments.

For technical drawings and 3-D models, click on a part number.

Thread						Each
Size	Pitch, mm	Lg., mm	Wd., mm	Specifications Met		1-9	10-Up
Zinc-Plated Steel
M14	2	42	22	DIN 6334	000000000	00000	00000

Metric Medium-Strength Steel Coupling Nuts—Class 8

Often referred to as extension nuts, use these to connect and extend threaded rods. They're comparable in strength to Class 8.8 bolts.

Zinc-plated steel coupling nuts resist corrosion in wet environments.

Black-oxide steel coupling nuts have a dark surface color and are mildly corrosion resistant in dry environments.

For technical drawings and 3-D models, click on a part number.

Thread						Each
Size	Pitch, mm	Lg., mm	Wd., mm	Specifications Met		1-9	10-Up
Zinc-Plated Steel—Class 8
M14	2	42	22	DIN 6334, ASME B18.2.2	000000000	000000	000000
Black-Oxide Steel—Class 8
M14	2	42	22	DIN 6334, ASME B18.2.2	000000000	00000	00000

Metric 18-8 Stainless Steel Coupling Nuts

Stainless Steel

Black-Oxide Stainless Steel

Made from 18-8 stainless steel, these metric coupling nuts have good chemical resistance and may be mildly magnetic. Also known as extension nuts, use them to connect and extend threaded rods.

Coupling nuts with a black-oxide finish have a dark surface color.

For technical drawings and 3-D models, click on a part number.

Thread						Each
Size	Pitch, mm	Lg., mm	Wd., mm	Specifications Met		1-9	10-Up
18-8 Stainless Steel
M14	2	42	22	DIN 6334, ASME B18.2.2	000000000	000000	000000
Black-Oxide 18-8 Stainless Steel
M14	2	42	22	DIN 6334, ASME B18.2.2	000000000	00000	00000

Metric Super-Corrosion-Resistant 316 Stainless Steel Coupling Nuts

Made from 316 stainless steel, these coupling nuts have excellent resistance to chemicals and salt water. Also known as extension nuts, use them to connect and extend threaded rods. They may be mildly magnetic.

For technical drawings and 3-D models, click on a part number.

Thread						Each
Size	Pitch, mm	Lg., mm	Wd., mm	Specifications Met		1-9	10-Up
316 Stainless Steel
M14	2	42	22	DIN 6334	000000000	000000	000000

Round Coupling Nuts

With a smooth rounded body for a finished look, use these nuts to connect and extend threaded rods.

18-8 stainless steel coupling nuts have good chemical resistance.

For technical drawings and 3-D models, click on a part number.

Thread						Each
Size	Pitch, mm	Lg.	OD	Specifications Met		1-9	10-Up
18-8 Stainless Steel
M14	2	30mm	18mm	ASTM A582	000000000	000000	000000
M14	2	40mm	18mm	ASTM A582	000000000	00000	00000

How to Identify and Measure Fittings

About Nuts, Materials, and Finishes

About Hose

Extreme-Pressure Stainless Steel Threaded Pipe Fittings

Compact Extreme-Pressure Steel Threaded Pipe Fittings

High-Pressure Brass Threaded Pipe Fittings

Metal Barbed Hose Fittings for Air and Water

International Standard ISO Minimal-SpillQuick-Disconnect Hose Couplings for Hydraulic Fluid

Push-On Barbed Hose Fittings for Hydraulic Fluid

Metal Barbed Hose Fittings for Chemicals and Petroleum

Beaded Hose Fittings for Coolant

Plastic Barbed Tube Fittings for Air and Water

Compression Fittings for Copper Tubing

Vibration-Resistant Compression Fittings for Stainless Steel Tubing

37° Flared Fittings for Steel Tubing

Compression Fittings for Steel Tubing

Vibration-Resistant Compression Fittings for Steel Tubing

Metric Low-Strength Steel Coupling Nuts

Metric Medium-Strength Steel Coupling Nuts—Class 8

Metric 18-8 Stainless Steel Coupling Nuts

Metric Super-Corrosion-Resistant 316 Stainless Steel Coupling Nuts

Round Coupling Nuts

International Standard ISO Minimal-Spill
Quick-Disconnect Hose Couplings for Hydraulic Fluid