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	Pipe Size Pipe Size	Show

	Pipe Size Pipe Size	Hide

1/8
1/4
3/8
1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
3 1/2
4
5
6
8
10
12

	Material Material

	Thread Type Thread Type

BSPT

NPSL

NPT

	Type Type


Adapter	Reducing Adapter

Connector	Bushing

Locknut	Plug

	For Use With For Use With

	Tank Connection Type Tank Connection Type

Weld

Threaded

	Shape Shape


Straight	Cap/Plug

Tee	90° Elbow

	Connection Style Connection Style

Threaded

	For Pipe Material For Pipe Material

Stainless Steel

Steel

Aluminum

	Gender Gender

Female

Male

	System of Measurement System of Measurement

Inch

	Length Length

	Mount Type Mount Type

	Through Wall

	For Hole Diameter For Hole Diameter

15/16"

1 3/16"

	Connection Type Connection Type

	Pipe

	For Tank Surface For Tank Surface

Flat

	Maximum Pressure Maximum Pressure

150 psi @ 72° F

250 psi @ 72° F

Not Rated

	Specifications Met Specifications Met

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

DFARS Specialty Metals
COTS-Exempt

	OD OD

	Tank Adapter Style Tank Adapter Style

With Extension

Without Extension

	For Pipe Schedule For Pipe Schedule

	40

	Hex Width Hex Width

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21 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.

Fittings that meet ANSI/MSS SP-114 adhere to high-quality standards for heat treating, material thickness, and marking. 304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.

Through-wall fittings are also known as bulkhead couplings; they mount through your wall or tank to create an inlet or outlet. When installing, the gasket should be on the inside of the tank.

Adapters for tanks create an inlet or outlet connection on the surface of any tank, pressure vessel, or drum. Adapters with weld end allow for a permanent connection. Adapters with extension fit tightly into the hole, which keeps the fitting steady during welding.

Locknuts thread onto the male end of a fitting to provide extra holding power so the fitting won’t loosen from vibration.

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.

Through-Wall Straight Connectors

For Use With: Water
Temperature Range: -20° to 300° F

							316 Stainless Steel
Pipe Size	For Hole Dia.	For Max. Wall Thick.	Lg.	Hex Wd.	Max. Pressure	Gasket Material		Each
NPT Female
3/8	1"	5/16"	1 5/16"	1 7/16"	150 psi @ 72° F	EPDM Rubber	0000000	0000000

Straight Adapters with Extension for Flat Tanks

For Use With: Water, Oil, Gasoline, Diesel Fuel
Specifications Met: ANSI/ASME B1.20.1, ASTM A182

				316 Stainless Steel
Pipe Size	For Hole Dia.	OD	Lg.		Each
NPT Female × Weld
3/8	15/16"	1 1/2"	5/16"	0000000	000000

Locknuts

For Use With: Air, Natural Gas, Oil, Steam, Water
Class:
NPSL: 150
Fabrication:
NPSL: Heat Treated
Specifications Met:
NPSL: ANSI/MSS SP-114, ASTM A351
BSPP: DIN 431
Pipe Nipples and Pipe:
NPSL: Use Schedule 40 stainless steel
Flanges:
NPSL: Use Class 150 stainless steel

			304 Stainless Steel		316 Stainless Steel
Pipe Size	Max. Pressure	Max. Steam Pressure		Each		Each
NPSL Female
3/8	150 psi @ 72° F	150 psi @ 360° F	00000000	00000	00000000	00000

Low-Pressure Iron and Steel Threaded Pipe Fittings

Use these fittings for low-pressure applications in noncorrosive environments.

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

Straight Adapters with Extension for Flat Tanks

For Use With: Diesel Fuel, Gasoline, Oil, Water
Specifications Met: ASTM A181, ASME B1.20.1

NPT Female × Weld
Pipe Size	For Hole Dia.	OD	Lg.	Material		Each
3/8	15/16"	1 5/16"	3/8"	Steel	00000000	00000
3/8	15/16"	1 1/2"	9/16"	Steel	00000000	0000

Straight Adapters for Flat Tanks

For Use With: Diesel Fuel, Gasoline, Oil, Water
Specifications Met: ASTM A105, ASTM A181

NPT Female × Weld
Pipe Size	For Hole Dia.	OD	Lg.	Material		Each
3/8	15/16"	1 1/4"	3/8"	Steel	00000000	00000

Bushing Straight Reducing Adapters

For Use With: Air, Steam, Oil, Water, Natural Gas
Class: See table
Specifications Met: ASME B16.14
Pipe Nipples and Pipe: Use Schedule 40 steel

Pipe Size
(A)	(B)	Class	Max. Pressure	Max. Steam Pressure	Material		Each
NPT Male × NPT Female
3/8	1/8	150	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Steel	000000000	00000
3/8	1/4	150	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Steel	000000000	000
1/2	3/8	150	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Steel	000000000	0000
3/4	3/8	150	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Steel	000000000	0000
1	3/8	150	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Steel	000000000	0000

Bushing Straight Reducing Adapters for Flat Tanks

For Use With: Air, Diesel Fuel, Gasoline, Oil, Steam, Water
Pipe Nipples and Pipe: Use Schedule 40 steel

Pipe Size
(A)	(B)	Lg.	Hex Wd.	Material		Each
NPT Male × NPT Female
2	3/8	1 5/16"	1 3/8"	Black-Coated Iron	0000000	000000

Low-Pressure Aluminum Threaded Pipe Fittings

In addition to being lightweight, these aluminum fittings offer good corrosion resistance. Use them in low-pressure flow applications. To prevent cracking, do not tighten more than a 1/4-turn past hand tight.

Adapters for tanks weld onto the surface of any tank, pressure vessel, or drum to create a permanent inlet or outlet connection. Adapters with extended lip fit tightly into the hole, which keeps the fitting steady during welding.

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

Straight Adapters with Extension for Flat Tanks

For Use With: Water, Oil, Gasoline, Diesel Fuel
Specifications Met: ASTM B221
Pipe Nipples and Pipe: Use Schedule 40 aluminum

NPT Female × Weld
Pipe Size	For Hole Dia.	OD	Lg.		Each
3/8	1 3/16"	1 7/16"	1/4"	0000000	000000

Medium-Pressure Aluminum Threaded Pipe Fittings

Designed for medium-pressure applications, these fittings have better strength than our low-pressure aluminum pipe fittings. They are lightweight with good corrosion resistance.

Female x male 90° elbow adapters are also known as street elbows.

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

Straight Connectors, Female

For Use With: Air, Oil, Water
Pipe Nipples and Pipe: Use Schedule 40 aluminum

BSPT Female
Pipe Size	Max. Pressure		Each
3/8	250 psi @ 72° F	0000000	00000

Bushing Straight Reducing Adapters

For Use With: Air, Oil, Water
Pipe Nipples and Pipe: Use Schedule 40 aluminum

Pipe Size
(A)	(B)	Max. Pressure		Each
BSPT Male × BSPT Female
3/8	1/4	250 psi @ 72° F	0000000	000000
1/2	3/8	250 psi @ 72° F	0000000	00000

90° Elbow Connectors

For Use With: Air, Oil, Water
Pipe Nipples and Pipe:
BSPT: Use Schedule 40 aluminum

BSPT Female
Pipe Size	Max. Pressure		Each
3/8	250 psi @ 72° F	0000000	000000

90° Elbow Adapters

For Use With: Air, Oil, Water
Pipe Nipples and Pipe:
BSPT: Use Schedule 40 aluminum

BSPT Female × BSPT Male
Pipe Size	Max. Pressure		Each
3/8	250 psi @ 72° F	0000000	000000

Tee Connectors

For Use With: Air, Oil, Water
Pipe Nipples and Pipe:
BSPT: Use Schedule 40 aluminum

BSPT Female
Pipe Size	Max. Pressure		Each
3/8	250 psi @ 72° F	0000000	000000

Plugs with External Square Drive

For Use With: Air, Oil, Water
Pipe Nipples and Pipe: Use Schedule 40 Aluminum

BSPT Male
Pipe Size	Plug Construction	Max. Pressure		Each
3/8	Solid	250 psi @ 72° F	0000000	00000