M5 Nipples | McMaster-Carr

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	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size	Show

	Thread Size Thread Size	Hide

	Thread Type Thread Type

BSPP

Metric

NPT

	Type Type


Pipe	Adapter

	Shape Shape


Straight	45° Elbow

	Material Material

	Connection Type Connection Type


Pipe	Tube

	ID ID

0.125"

	Length Length

	Connection Style Connection Style

Threaded

Barbed

Push to Connect

	Gender Gender

Male

	Thread Pitch Thread Pitch

0.5 mm

0.8 mm

	Pipe Size Pipe Size

1/16

1/8

1/4

	For Use With For Use With

	For Tube ID For Tube ID

	OD OD

3/16"

	Barbed Connection Type Barbed Connection Type

	Clamp On
	Push On

	Maximum Pressure Maximum Pressure

	Number of Barbs Number of Barbs

	Single

	Threading Threading

	Fully Threaded

	Finish Finish

Nickel Plated

Zinc Plated

Anodized

	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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32 Products

About Grease Fitting Threads

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.

Miniature Medium-Pressure Stainless Steel Threaded Pipe Fittings

When space is at a premium choose these compact fittings. Though small in size, they have the strength to handle medium-pressure applications. Fittings are stainless steel for very good corrosion resistance.

Metric, BSPP, and UN/UNF (SAE Straight) male threads have a gasket to protect against leaks. Made from fluoroelastomer, these gaskets resist chemicals, including benzene, butyl alcohol, and ethylene glycol. UN/UNF (SAE Straight) threads are also known as O-ring boss threads.

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

Straight Adapters, Male

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

For Use With: Air, Natural Gas, Oil, Steam, Water
Specifications Met: ASTM A314, ASTM A320, ASTM A582

					303 Stainless Steel
Pipe Size	Thread Size	Max. Pressure	Max. Steam Pressure	Gasket Material		Each
NPT Male × Metric Male
1/16	M5 × 0.8 mm	500 psi @ 72° F	100 psi @ 350° F	Fluoroelastomer Rubber	00000000	000000
1/8	M5 × 0.8 mm	500 psi @ 72° F	100 psi @ 350° F	Fluoroelastomer Rubber	00000000	00000
1/4	M5 × 0.8 mm	500 psi @ 72° F	100 psi @ 350° F	Fluoroelastomer Rubber	00000000	00000

High-Pressure Plated Brass Threaded Pipe Nipples and Pipe

The plating on this pipe creates a shiny finish and provides extra protection in corrosive environments. It has the strength to handle high-pressure applications.

Nickel-plated brass pipe provides better corrosion resistance than unplated brass.

Fully threaded pipe is also known as a close nipple; it is threaded on each end to the center.

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

Fully Threaded

For Use With: Air, Natural Gas, Oil, Water

				Nickel-Plated Brass
Thread Size	Lg.	Hex Wd.	Max. Pressure		Each
Metric
M5	7/16"	5/16"	1,080 psi @ 72° F	00000000	00000

High-Pressure Plated Brass Threaded Pipe Fittings

The plating on these brass fittings creates a shiny finish and provides extra protection in corrosive environments. Fittings have the strength to handle high-pressure applications.

Nickel-plated brass fittings provide better corrosion resistance than unplated brass fittings.

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

Straight Adapters, Male × Male

For Use With: Air, Natural Gas, Oil, Water

			Nickel-Plated Brass
Pipe Size	Thread Size	Max. Pressure		Each
BSPP Male × Metric Male
1/8	M5 × 0.8 mm	1,080 psi @ 72° F	00000000	00000

Miniature Medium-Pressure Aluminum Threaded Pipe Fittings

Their small size makes these miniature fittings a good choice for cramped, confined spaces. They are designed to handle medium-pressure applications. Fittings are aluminum, which is lightweight with good corrosion resistance.

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, Male

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

For Use With: Air, Oil, Water
Specifications Met: ASME B1.20.1, ASTM B241

NPT Male × Metric Male
Pipe Size	Thread Size	Max. Pressure		Each
1/16	M5 × 0.8 mm	150 psi @ 72° F	00000000	00000
1/8	M5 × 0.8 mm	150 psi @ 72° F	00000000	0000
1/4	M5 × 0.8 mm	150 psi @ 72° F	00000000	00000

Nickel-Plated Brass Low-Pressure Barbed Tube Fittings for Air and Water

The nickel plating on these brass fittings provides extra protection against corrosive environments. The plating won’t peel or chip, so the fittings keep a bright, polished appearance. The barbs grip onto tubing, providing a secure hold with no clamp required.

Metric male threads have a fiber gasket that forms a tight seal.

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

Straight Adapters, Tube × Male Threaded Pipe

Metric Male Threads with Gasket

Temperature Range: -40° to 230° F,
except UN/UNF (SAE Straight) Threads: -20° to 160° F
Tubing: Use with hard (Durometer 60D-90D) Buna-N rubber, EVA plastic, Nylon plastic, polyethylene plastic, polypropylene plastic, polyurethane rubber, PTFE plastic, PVC plastic, PVDF plastic, or silicone rubber,
except UN/UNF (SAE Straight) Threads: Use with firm (Durometer 85A) polyurethane rubber

Metric Threads
For Tube ID	Thread Size	Material	Gasket Material	Max. Pressure		Each
1mm	M5	Nickel-Plated Brass	Fiber	120 psi @ 72° F	0000000	00000
2mm	M5	Nickel-Plated Brass	Fiber	120 psi @ 72° F	0000000	0000
4mm	M5	Nickel-Plated Brass	Fiber	120 psi @ 72° F	0000000	0000
6mm	M5	Nickel-Plated Brass	Fiber	120 psi @ 72° F	0000000	0000

Choose-a-Color Aluminum Low-Pressure Barbed Tube Fittings for Air and Water

For Use With: Air, Lubricated Air, Water
Temperature Range: -40° to 230° F
Tubing: Use with hard (Durometer 75A-60D) EVA plastic, polyethylene plastic, polyurethane rubber or PVDF plastic

Color-code fittings for easy identification. Fittings are aluminum, which is lightweight with good corrosion resistance. The barb grips onto tubing, providing a secure hold with no clamp required.

Metric and UN/UNF (SAE Straight) male threads have a gasket for a tight seal.

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

Straight Adapters, Tube × Male Threaded Pipe

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

Metric Threads
For Tube ID	Thread Size	Thread Pitch, mm	Material	Gasket Material	Max. Pressure	Choose a Color		Each
1/16"	M5	0.8	Anodized Aluminum	Fiber	125 psi @ 72° F	Black, Blue, Red	00000000	00000
1/8"	M5	0.8	Anodized Aluminum	Fiber	125 psi @ 72° F	Black, Blue, Red	00000000	0000
1/4"	M5	0.8	Anodized Aluminum	Fiber	125 psi @ 72° F	Black, Blue, Red	00000000	0000
4mm	M5	0.8	Anodized Aluminum	Fiber	125 psi @ 72° F	Black, Blue, Red	00000000	00000

Aluminum Low-Pressure Barbed Tube Fittings for Air and Water

For Use With: Air, Lubricated Air, Water
Temperature Range: -40° to 230° F
Tubing: Use with hard (Durometer 75A-60D) EVA plastic, polyethylene plastic, polyurethane rubber or PVDF plastic

Made of aluminum, these fittings are lighter in weight than other metal barbed tube fittings and have good corrosion resistance. The barb grips onto tubing, providing a secure hold with no clamp required.

Metric, BSPP, and UN/UNF (SAE Straight) male threads have a gasket or O-ring for a tight seal.

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

Straight Adapters, Tube × Male Threaded Pipe

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

Metric Threads
For Tube ID	Thread Size	Thread Pitch, mm	Material	Gasket Material	Max. Pressure		Each
1/8"	M5	0.8	Aluminum	Fiber	125 psi @ 72° F	00000000	00000
1/4"	M5	0.8	Aluminum	Fiber	125 psi @ 72° F	00000000	0000
1mm	M5	0.8	Aluminum	Fiber	125 psi @ 72° F	0000000	0000
2mm	M5	0.8	Aluminum	Fiber	125 psi @ 72° F	0000000	0000
4mm	M5	0.8	Aluminum	Fiber	125 psi @ 72° F	0000000	0000
6mm	M5	0.8	Aluminum	Fiber	125 psi @ 72° F	0000000	0000

Stainless Steel High-Pressure Barbed Tube Fittings for Air and Water

Temperature Range: See table
Tubing: Use with firm (Durometer 75A-95A) EVA plastic, polyethylene plastic, polypropylene plastic or PVC plastic

Fittings withstand pressures up to 250 psi. They are 303 stainless steel for very good corrosion resistance.

Metric, BSPP, 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, Tube × Male Threaded Pipe

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

Metric Threads
For Tube ID	Thread Size	Thread Pitch, mm	Material	Gasket Material	Max. Pressure	Temp. Range, °F	Number of Barbs		Each
6mm	M5	0.8	303 Stainless Steel	Viton® Fluoroelastomer Rubber	250 psi @ 72° F	-40° to 500° F	Single	00000000	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.
3mm	M5 × 0.5 mm	Nylon Plastic	Gray	Opaque	145 psi @ 72° F	-40° to 190°	10	00000000	00000

Tight-Seal Plastic Barbed Tube Fittings for Air and Water

Minimize leaks in your line—these fittings have a single barb that creates a smooth clamping surface for extra-tight connections. Fittings are nylon for 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: Use with firm (Durometer 75A-80A) polyurethane rubber or PVC plastic

Metric Threads
For Tube ID	Thread Size	Thread Pitch	Material	Max. Pressure	Temp. Range, °F	Pkg. Qty.	Choose a Color		Pkg.
1/16"	M5	0.8 mm	Nylon Plastic	Not Rated	Not Rated	10	White	00000000	00000
3/32"	M5	0.8 mm	Nylon Plastic	Not Rated	Not Rated	10	White	00000000	0000
1/8"	M5	0.8 mm	Nylon Plastic	Not Rated	Not Rated	10	Black, White	00000000	0000

Push-to-Connect Tube Fittings for Air

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

Temperature Range: 0° to 170° F
Tubing: Use with firm (Durometer 95A-45D) polyethylene plastic or polyurethane rubber
Specifications Met: ISO 14743, except polybutylene plastic fittings

Insert tubing into these fittings and an internal gripping ring and O-ring hold the tubing tight. They are also known as instant fittings. To disconnect, push on the release ring and pull the tubing out of the fitting. Fittings have good corrosion resistance.

Identification rings (sold separately) snap over the release ring so you can color-code your lines.

Clips (sold separately) align and organize your tubing and fittings.

Metric male threads have either a gasket or a thread sealant to protect against leaks.

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

Straight Adapters, Tube Stem × Male Threaded Pipe

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

Fittings with tube stem insert into the push-to-connect end of another fitting in place of a length of tubing.

Metric Threads
Tube Stem OD	Thread Size	Thread Pitch, mm	Tube Connection Material	Pipe Connection Material	Gasket Material	Color	Max. Pressure		Each
4mm	M5	0.8	Nylon Plastic	Nickel-Plated Brass	Buna-N Rubber	Black	290 psi @ 72° F	00000000	000000

Stainless Steel Barbed Tube Fittings for Food and Beverage

Temperature Range: -20° to 750° F
Tubing: Use with soft or firm (Durometer 65A-90A) polyurethane rubber or PVC plastic
Specifications Met: See table

Made of stainless steel, these fittings are more durable than plastic barbed tube fittings for food and beverage. They have single or multiple barbs that grip onto tubing.

Metric and BSPP fittings have a Buna-N O-ring to ensure a strong seal. Buna-N is made of FDA listed material for use with food and beverages. These O-rings are resilient and resist tearing, animal and vegetable oil, citric acid, sodium bicarbonate, grease, and motor oil.

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

Straight Adapters, Tube × Male Threaded Pipe

BSPP and Metric Male Threads with O-Ring

Metric Threads
For Tube ID	O-Ring Material	Thread Size	Material	Max. Pressure	Specifications Met		Each
6mm	Buna-N Rubber	M5	303 Stainless Steel	270 psi @ 72° F	ASTM A581, ASTM A582, FDA Compliant 21 CFR 177.2600	00000000	00000

Grease Fittings

These fittings are also known as hydraulic grease fittings.

Zinc-plated steel fittings have mild corrosion resistance. 303 stainless steel fittings are more corrosion resistant than brass fittings and have good chemical resistance.

Fittings with a check valve prevent grease from leaking when pressure causes backward flow. The valve stays closed when not in use to keep out dirt and other contaminants.

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

Straight with Male Threads

Straight with
Male
Threads

										Pkg.
Material	Overall Ht.	Shank Lg.	Thread Lg.	Hex Size	Max. Pressure, psi	Check Valve Type	Specifications Met	Pkg. Qty.		1-9	10-Up
M5 × 0.8 mm Metric Threads
Zinc-Plated Steel	15mm	5.5mm	5.5mm	7mm	10,000	Ball	DIN 71412	10	0000000	000000	000000
303 Stainless Steel	15mm	5.5mm	5.5mm	7mm	10,000	Ball	DIN 71412	1	0000000	0000	0000

45° Elbow with Male Threads

										Pkg.
Material	Overall Ht.	Thread Lg.	Shank Lg.	Hex Size	Max. Pressure, psi	Check Valve Type	Specifications Met	Pkg. Qty.		1-9	10-Up
M5 × 0.8 mm Metric Threads
Zinc-Plated Steel	24mm	5.5mm	5.5mm	9mm	10,000	Ball	DIN 71412	10	0000000	000000	000000