1/16 NPTF Pipe Fittings | McMaster-Carr

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48 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.

Low-Pressure Stainless Steel Threaded Pipe Fittings

Use these fittings in a low-pressure pipe line. 316 stainless steel fittings have excellent corrosion resistance.

NPTF (Dryseal) threads and NPSL (National Pipe Straight Locknut) threads are compatible with NPT threads.

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

Plugs with Hex Drive

For Use With: Air, Steam, Oil, Water, Natural Gas
Pressure Class:
NPTF: 150
Specifications Met:
Metric and BSPP: DIN 908
Pipe Nipples and Pipe:
NPTF: Use Schedule 40 stainless steel
Flanges:
NPTF: Use Class 150 stainless steel

				302 Stainless Steel		316 Stainless Steel
Pipe Size	Drive Size	Max. Pressure	Max. Steam Pressure		Each		Each
NPTF Male
1/16	5/32"	270 psi @ 72° F	180 psi @ 360° F	00000000	00000	00000000	00000

Low-Pressure Galvanized Iron and Steel Threaded Pipe Fittings with Sealant

The male threads on these fittings have a sealant applied for extra leak protection. Fittings are made of galvanized iron or steel, which have fair corrosion resistance. Also known as Pressure Class 125 or 150 fittings, they are for use in low-pressure applications.

NPTF (Dryseal) threads are compatible with NPT threads.

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

Plugs with Hex Drive

For Use With: Air, Oil, Natural Gas, Water
Pressure Class: 150
Specifications Met: See table
Pipe Nipples and Pipe: Use Schedule 40 galvanized steel
Flanges: Use Class 150 galvanized steel

NPTF Male
Pipe Size	Drive Size	Max. Pressure	Max. Steam Pressure	Specifications Met		Each
1/16	5/32"	Not Rated	Not Rated	SAE J531	0000000	00000

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 zinc-plated steel, which have better corrosion resistance than plain steel fittings.

NPTF (Dryseal) threads are compatible with NPT threads.

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

Plugs with Hex Drive

For Use With:
NPTF and UN/UNF (SAE Straight): Air, Hydraulic Fluid, Water
Metric, BSPP and BSPT: Air, Hydraulic Fluid, Oil, Water
Specifications Met: See table

NPTF Male
Pipe Size	Drive Size	Max. Pressure	Material	Specifications Met		Each
1/16	5/32"	6,000 psi @ 72° F	Zinc Plated Steel	ASTM A108	000000000	00000

High-Pressure Brass Threaded Pipe Fittings

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

Inline tees are also known as branch tees. Right-angle tees are also known as run tees.

NPTF (Dryseal) threads are compatible with NPT threads.

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

90° Elbow Connectors, Female

For Use With: Air, Natural Gas, Oil, Water
Specifications Met: See table

NPTF Female
Pipe Size	Max. Pressure		Each
1/16	1,000 psi @ 72° F	000000000	000000

90° Elbow Reducing Adapters

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

Pipe Size
(A)	(B)	Max. Pressure		Each
NPTF Female × NPTF Male
1/8	1/16	1,000 psi @ 72° F	000000000	000000

90° Elbow Reducers

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

Pipe Size
(A)	(B)	Max. Pressure		Each
NPTF Female
1/8	1/16	1,000 psi @ 72° F	000000000	000000

Right-Angle Tee Reducing Adapters

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

Pipe Size
(A)	(B)	Max. Pressure		Each
NPTF Female × NPTF Male
1/8	1/16	1,000 psi @ 72° F	000000000	000000

Inline Tee Reducers

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

Pipe Size
(A)	(B)	Max. Pressure		Each
NPTF Female
1/8	1/16	1,000 psi @ 72° F	000000000	000000

Easy-Install High-Pressure Brass Threaded Pipe Fittings

Install and remove these fittings with a socket wrench or hex key (sold separately). They are compact, so they require less clearance than traditional elbows. Use them in high-pressure applications. Fittings 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.

90° Elbow Connectors with Hex Drive

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

NPTF Female
Pipe Size	Drive Size	Max. Pressure	Max. Steam Pressure		Each
1/16	1/4"	1,000 psi @ 72° F	1,000 psi @ 250° F	0000000	00000

90° Elbow Connectors with External Hex Drive

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

NPTF Female
Pipe Size	Max. Pressure	Max. Steam Pressure		Each
1/16	1,000 psi @ 72° F	1,000 psi @ 250° F	0000000	00000

90° Elbow Adapters with Hex Drive

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

NPTF Male × NPTF Female
Pipe Size	Drive Size	Max. Pressure	Max. Steam Pressure		Each
1/16	1/4"	1,000 psi @ 72° F	1,000 psi @ 250° F	0000000	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

Create a strong connection without heating, flaring, or soldering. These fittings have a single sleeve (ferrule or olive) that bites into tubing as you tighten the nut. Both the nut and sleeve are included. Also known as single ferrule fittings, they are easier to install than yor-lok fittings which have two ferrules. They’re often used in low to medium pressure applications, such as plumbing and compressed air systems, which don’t require the strength of a yor-lok fitting. Compression fittings for copper tubing can withstand higher pressures than compression fittings for plastic and rubber tubing. Made of brass, they have good corrosion resistance.

To connect a compression fitting to tube, slide the nut and sleeve onto the tube. Then push the tube into the fitting until it butts against the back of the fitting. Tighten the nut onto the fitting to compress the sleeve.

Threaded connections can be taken apart as needed for maintenance and repair. NPTF (Dryseal) threads are compatible with NPT threads.

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

Straight Adapters, Tube × Male Threaded Pipe

For Tube
OD	Wall Thick.	Pipe Size	Material	Max. Pressure	Temp. Range, °F	Specifications Met		Each
NPTF Threads
3/16"	0.03"	1/16	Brass	1,900 psi @ 72° F	-65° to 250°	UL Listed	00000000	00000

90° Elbow Adapters, Tube × Male Threaded Pipe

For Tube
OD	Wall Thick.	Pipe Size	Material	Max. Pressure	Temp. Range, °F	Specifications Met		Each
NPTF Threads
3/16"	0.03"	1/16	Brass	1,900 psi @ 72° F	-65° to 250°	UL Listed	00000000	000000

Nuts

Long

For Tube
OD	Wall Thick.	Nut Material	Max. Pressure	Temp. Range, °F	Lg.	Specifications Met		Each
Long Nuts
3/16"	0.03"	Brass	400 psi @ 72° F	-65° to 250°	5/8"	UL Listed	000000000	00000

Nuts with Built-In Sleeve

With Built-In Sleeve

For Tube
OD	Wall Thick.	Nut Material	Sleeve Material	Max. Pressure	Temp. Range, °F	Lg.	Specifications Met		Each
Short Nuts
3/16"	0.03"	Brass	Brass	1,900 psi @ 72° F	-65° to 250°	3/8"	UL Listed	00000000	00000

Sleeves

For Tube
OD	Wall Thick.	Sleeve Material	Max. Pressure	Temp. Range, °F	For Tube Hardness Rating	Specifications Met	Pkg. Qty.		Pkg.
3/16"	0.03"	Brass	400 psi @ 72° F	-65° to 200°	Firm, Hard (Durometer 1A-95A)	UL Listed	10	000000000	00000

Brass Push-to-Connect Tube Fittings for Air

Temperature Range: 0° to 200° F, except Tube Stem Straight Connectors are 0° to 150° F, and Plugs are 0° to 170° F
Tubing: See table

These fittings offer good protection against corrosive environments. Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. To disconnect, push on the release ring and pull the tubing out of the fitting.

Fittings with acrylic thread sealant offer extra protection against leaks.

NPTF (Dryseal) threads are compatible with NPT threads.

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

Straight Adapters, Tube × Male Threaded Pipe

			Release Ring			For Tube
For Tube OD	Pipe Size	Material	Material	Color	Max. Pressure	Material	Hardness Rating	Features		Each
NPTF Threads
1/8"	1/16	Brass	Plastic	Black	290 psi @ 72° F	Nylon Plastic, Polyethylene Plastic	Hard	Acrylic Thread Sealant	000000000	00000
5/32"	1/16	Nickel-Plated Brass	Plastic	Black	290 psi @ 72° F	Nylon Plastic, Polyethylene Plastic	Hard	Acrylic Thread Sealant	000000000	0000
1/4"	1/16	Brass	Plastic	Black	290 psi @ 72° F	Nylon Plastic, Polyethylene Plastic	Hard	Acrylic Thread Sealant	000000000	0000

90° Elbow Adapters (Intermittent Swivel), Tube × Male Threaded Pipe

Fittings with intermittent swivel rotate 360° before and after installation as needed to allow movement in the system and to prevent kinking.

			Release Ring			For Tube
For Tube OD	Pipe Size	Material	Material	Color	Max. Pressure	Material	Hardness Rating	Features		Each
NPTF Threads
1/8"	1/16	Nickel-Plated Brass	Plastic	Black	290 psi @ 72° F	Nylon Plastic, Polyethylene Plastic	Hard	Acrylic Thread Sealant	000000000	000000
5/32"	1/16	Nickel-Plated Brass	Plastic	Black	290 psi @ 72° F	Nylon Plastic, Polyethylene Plastic	Hard	Acrylic Thread Sealant	000000000	00000

Plugs

Plugs insert into the push-to-connect end of another fitting.

Tube Stem OD	Material	Max. Pressure	Specifications Met		Each
1/8"	Nylon Plastic	290 psi @ 72° F	ISO 14743	0000000	00000
5/32"	Nylon Plastic	290 psi @ 72° F	ISO 14743	00000000	000
1/4"	Nylon Plastic	290 psi @ 72° F	ISO 14743	0000000	0000

Brass Low-Pressure Barbed Tube Fittings for Air and Water

A brass body provides protection against corrosive environments. Fittings have barbs that grip onto tubing.

NPTF (Dryseal) fittings are compatible with NPT threads.

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

Straight Adapters, Tube × Male Threaded Pipe

Temperature Range: NPT, UN/UNF (SAE Straight) Threads: 32° to 180° F
NPTF Threads: -65° to 75° F
BSPT Threads: -40° to 160° F
Tubing: NPT, UN/UNF (SAE Straight) Threads: Use with firm (Durometer 85A) polyurethane rubber
NPTF Threads: Use with firm (Durometer 95A) polyurethane rubber
BSPT Threads: Use with firm (Durometer 85A) nylon plastic

NPTF Threads
For Tube ID	Pipe Size	Number of Barbs	Material	Max. Pressure	Lg.	Pkg. Qty.		Pkg.
0.17"	1/16	Multiple	Brass	100 psi @ 72° F	15/16"	1	000000000	00000

90° Elbow Adapters, Tube × Male Threaded Pipe

Temperature Range: -65° to 75° F
Tubing: Use with firm (Durometer 95A) polyurethane rubber

NPTF Threads
For Tube ID	Pipe Size	Number of Barbs	Material	Max. Pressure		Each
0.17"	1/16	Multiple	Brass	100 psi @ 72° F	000000000	00000

Inline Tee Adapters, Tube × Male Threaded Pipe

Temperature Range: -65° to 75° F
Tubing: Use with firm (Durometer 95A) polyurethane rubber

Inline tees are also known as branch tees.

NPTF Threads
For Tube ID	Pipe Size	Number of Barbs	Material	Max. Pressure		Each
0.17"	1/16	Multiple	Brass	100 psi @ 72° F	000000000	000000

Brass Compression Tube Fittings for Air and Water

For Use With: Air, Lubricated Air, Water
Temperature Range: See table
Tubing: Use with firm or hard (Durometer 1A-95A or Rockwell 15T 1-15T 60) nylon plastic, polyethylene plastic, polypropylene plastic or polyurethane rubber
Specifications Met: SAE J512, except metric sizes

A single sleeve (ferrule) compresses the 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.

Use tube supports (sold separately) when attaching fittings to plastic and rubber tubing to prevent the tube from collapsing.

NPTF (Dryseal) threads are compatible with NPT threads.

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

Straight Adapters with Center Stop, Tube × Male Threaded Pipe

For Tube
OD	Wall Thick.	Pipe Size	Material	Max. Pressure	Temp. Range, °F		Each
NPTF Threads
1/8"	0.03"	1/16	Brass	400 psi @ 72° F	-65° to 250°	000000000	00000
3/16"	0.03"	1/16	Brass	400 psi @ 72° F	-65° to 250°	000000000	0000

90° Elbow Adapters, Tube × Male Threaded Pipe

For Tube
OD	Wall Thick.	Pipe Size	Material	Max. Pressure	Temp. Range, °F		Each
NPTF Threads
1/8"	0.03"	1/16	Brass	400 psi @ 72° F	-65° to 250°	000000000	000000
3/16"	0.03"	1/16	Brass	400 psi @ 72° F	-65° to 250°	000000000	00000

Tube Supports For Use With Air and Lubricated Air

Temperature Range:
Inch: -65° to 250° F
Metric: -40° to 250° F
Tubing:
Tube supports with 135 psi @ 75° F or 165 psi @ 75° F max. pressures: Use with firm or soft polyethylene plastic or PVC plastic
Tube supports with all other max. pressures: Use with firm or soft (Durometer 1A-95A) polyethylene plastic or polypropylene plastic

For Tube
OD	ID	Tube Support Material	Max Pressure	Pkg. Qty.		Pkg.
1/8"	3/32"	Brass	400 psi @ 72° F	10	000000000	000000
1/8"	7/64"	Brass	400 psi @ 72° F	10	000000000	00000
3/16"	1/8"	Brass	400 psi @ 72° F	10	000000000	00000
3/16"	9/64"	Brass	400 psi @ 72° F	10	000000000	0000
1/4"	5/32"	Brass	165 psi @ 75° F	10	000000000	00000

Nuts

Short

For Use With:
Short nuts: Air, Water, Lubricated Air
Long nuts: Air, Water, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil
Temperature Range: See table
Tubing:
Short nuts: Use with firm or hard (Durometer 1A-95A or Rockwell 15T 1-15T 60) nylon plastic, polyethylene plastic, polypropylene plastic, or polyurethane rubber
Long nuts: Use with firm or hard (Durometer 1A-95A) copper, nylon plastic, polyethylene plastic, polypropylene plastic, or polyurethane rubber
Specifications Met: See table

For Tube
OD	Wall Thick.	Nut Material	Max. Pressure	Temp. Range, °F	Specifications Met		Each
Short Nuts
1/8"	0.03"	Brass	400 psi @ 72° F	-65° to 250°	SAE J512	000000000	00000
3/16"	0.03"	Brass	400 psi @ 72° F	-65° to 250°	SAE J512	000000000	0000

Sleeves

For Use With:
UL Listed sleeves: Air, Water, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil
All other sleeves: Air, Water, Lubricated Air
Temperature Range: See table
Tubing:
UL Listed sleeves: Use with firm or hard (Durometer 1A-95A) copper, nylon plastic, polyethylene plastic, polypropylene plastic, or polyurethane rubber
All other sleeves: Use with firm or hard (Durometer 1A-95A or Rockwell 15T 1-15T 60) nylon plastic, polyethylene plastic, polypropylene plastic, or polyurethane rubber
Specifications Met: See table

For Tube		Sleeve
OD	Wall Thick.	Material	Max. Pressure	Temp. Range, °F	Specifications Met	Pkg. Qty.		Pkg.
1/8"	0.03"	Brass	400 psi @ 72° F	-65° to 200°	UL Listed	10	000000000	00000
3/16"	0.03"	Brass	400 psi @ 72° F	-65° to 200°	UL Listed	10	000000000	0000

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

Temperature Range: -40° to 200° F
Tubing: Use with hard (Durometer 65D) nylon plastic
Specifications Met: D.O.T. FMVSS 571

Safe for use in your air brake line, these fittings meet Department of Transportation FMVSS 571 standards. They’ve been tested for thermal cycling, vibration, and burst pressure, so put them to work right away. They have a single sleeve (ferrule) that compresses the tubing as you tighten the included nut, creating a strong seal. All components are made of brass and are corrosion resistant. Also known as flareless fittings.

Fittings with male threaded pipe connection have acrylic thread sealant to stop leaks and prevent loosening on the pipe end.

NPTF (Dryseal) threads are compatible with NPT threads.

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

Straight Adapters, Tube × Male Threaded Pipe

NPTF Threads
For Tube OD	Pipe Size	Material	Fitting Seal Type	Max. Pressure		Each
1/4"	1/16	Brass	Thread Sealant	150 psi @ 72° F	000000000	000000

Nuts

For Tube OD	Nut Material	Max. Pressure	Pkg. Qty.		Pkg.
1/4"	Brass	150 psi @ 72° F	10	000000000	00000

Sleeves

For Tube OD	Sleeve Material	Max. Pressure	Pkg. Qty.		Pkg.
1/4"	Brass	150 psi @ 72° F	10	000000000	00000

Quick-Assembly Brass Compression Tube Fittings for Air and Water

Temperature Range: 0° to 150° F
Tubing: Fittings with acetal plastic sleeves: Use with (firm or hard) polyethylene plastic or polypropylene plastic
Fittings with brass sleeves: Use with (firm or hard) nylon plastic, polyethylene plastic or polypropylene plastic

These fittings include a nut with a built-in sleeve (ferrule), so there’s no need to remove the nut for assembly. The sleeve compresses the tubing as you tighten the nut, creating a strong seal. Fittings are also known as flareless fittings. They are brass for good corrosion resistance.

Tube supports are recommended if you want to use the fittings with soft polyethylene, polypropylene, or PVC plastic tubing. They prevent the tube from collapsing.

NPTF (Dryseal) threads are compatible with NPT threads.

Straight Adapters, Tube × Male Threaded Pipe

NPTF Threads
For Tube OD	Pipe Size	Material	Sleeve Material	Max. Pressure		Each
1/8"	1/16	Brass	Brass	150 psi @ 72° F	0000000	00000
1/4"	1/16	Brass	Acetal Plastic	150 psi @ 72° F	00000000	00000

90° Elbow Adapters, Tube × Male Threaded Pipe

NPTF Threads
For Tube OD	Pipe Size	Material	Sleeve Material	Max. Pressure		Each
1/8"	1/16	Brass	Brass	150 psi @ 72° F	0000000	000000
1/4"	1/16	Brass	Acetal Plastic	150 psi @ 72° F	00000000	00000

Tube Supports

For Use With: Air, Lubricated Air
Temperature Range: -65° to 250° F
Tubing:
Tube supports with 135 psi @ 75° F or 165 psi @ 75° F max. pressures: Use with firm or soft polyethylene plastic or PVC plastic
Tube supports with all other max. pressures: Use with firm or soft (Durometer 1A-95A) polyethylene plastic or polypropylene plastic

For Tube
OD	ID	Tube Support Material	Max. Pressure	Pkg. Qty.		Pkg.
1/8"	3/32"	Brass	400 psi @ 72° F	10	000000000	000000
1/4"	1/8"	Brass	300 psi @ 72° F	10	000000000	00000
1/4"	5/32"	Brass	165 psi @ 75° F	10	000000000	00000