How to Measure Threaded Pipe Size
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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.
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How to Install Key-Locking Inserts
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About Hose
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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.
Male Threads with
Gasket and Washer
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 | |||||||||
1/2 | __ | 08 | M22 × 1.5 mm | __ | 3,500 psi @ 72° F | Hydraulic Fluid, Oil, Water | ASME B1.20.3, DIN 7631, ISO 9974 | 00000000 | 000000 |
Metric Female × UN/UNF (SAE Straight) Male | |||||||||
__ | M22 × 1.5 mm | __ | 7/8"-14 | 10 | 5,000 psi @ 72° F | Hydraulic Fluid (Petroleum Base), Oil, Water | __ | 000000000 | 000000 |
UN/UNF (SAE Straight) Female × Metric Male | |||||||||
__ | 7/8"-14 | 10 | M22 × 1.5 mm | __ | 3,500 psi @ 72° F | Hydraulic Fluid (Petroleum Base), Oil, Water | __ | 000000000 | 00000 |
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 | |||||||
1/2 | 08 | M22 × 1.5 mm | 4,500 psi @ 72° F | Hydraulic Fluid, Oil, Water | DIN 7631, ISO 1179, ISO 8434-6, ISO 9974 | 00000000 | 000000 |
3/4 | 12 | M22 × 1.5 mm | 3,600 psi @ 72° F | Hydraulic Fluid, Oil, Water | DIN 7631, ISO 1179, ISO 8434-6, ISO 9974 | 00000000 | 00000 |
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.
- For Use With: Air, Water, Natural Gas, Oil
- Specifications Met: SAE J530, SAE J531
Pipe Size | Thread Size | Max. Pressure | Male End Gasket Material | Each | |
NPTF Female × Metric Male | |||||
---|---|---|---|---|---|
3/8 | M22 × 1.5 mm | 1,000 psi @ 72° F | Fluorocarbon Rubber | 000000000 | 000000 |
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 and zinc-plated steel, which have better corrosion resistance than plain steel fittings. 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.
- 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
Thread Size | Max. Pressure | Material | Each | |
Metric Female | ||||
---|---|---|---|---|
M22 × 1.5 mm | 3,500 psi @ 72° F | Galvanized Steel | 00000000 | 000000 |
Male Threads with
Gasket and Washer
- For Use With: See table
- Specifications Met: See table
Pipe Size (A) | Thread Size (A) | Dash Size (A) | Pipe Size (B) | Thread Size (B) | Dash Size (B) | Max. Pressure | Material | For Use With | Specifications Met | Each | |
NPT Female × Metric Male | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
1/2 | __ | 08 | __ | M22 × 1.5 mm | __ | 3,500 psi @ 72° F | Galvanized Steel | Air, Hydraulic Fluid, Oil, Water | ASME B1.20.3, DIN 2353, ISO 8434-1 | 00000000 | 000000 |
Metric Female × NPT Male | |||||||||||
__ | M22 × 1.5 mm | __ | 1/2 | __ | 08 | 4,500 psi @ 72° F | Galvanized Steel | Air, Hydraulic Fluid, Oil, Water | ASME B1.20.3, DIN 7631, ISO 6149, ISO 9974 | 00000000 | 00000 |
(SAE Straight) Male
Threads with Gasket and Washer
- For Use With: See table
- Specifications Met: See table
Pipe Size (A) | Dash Size (A) | Thread Size (B) | Max. Pressure | Material | For Use With | Specifications Met | Each | |
NPT Male × Metric Male | ||||||||
---|---|---|---|---|---|---|---|---|
1/2 | 08 | M22 × 1.5 mm | 4,500 psi @ 72° F | Galvanized Steel | Air, Hydraulic Fluid, Oil, Water | ASME B1.20.3, DIN 2353, ISO 8434-1 | 00000000 | 000000 |
BSPP Male × Metric Male | ||||||||
1/2 | 08 | M22 × 1.5 mm | 4,500 psi @ 72° F | Galvanized Steel | Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water | DIN 7631, ISO 1179, ISO 6149, ISO 8434-6, ISO 9974 | 00000000 | 00000 |
5/8 | __ | M22 × 1.5 mm | 4,000 psi @ 72° F | Galvanized Steel | Air, Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water | DIN 7631, ISO 1179, ISO 6149, ISO 8434-6, ISO 9974 | 00000000 | 00000 |
- 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
Thread Size | |||||
---|---|---|---|---|---|
(A) | (B) | Max. Pressure | Material | Each | |
Metric Female | |||||
M22 × 1.5 mm | M16 × 1.5 mm | 4,000 psi @ 72° F | Galvanized Steel | 00000000 | 000000 |
Low-Profile Hex Manifolds
When you’re short on vertical space, these manifolds are a good fit—they have outlets on the side instead of on top, so they have a lower profile than rectangular manifolds. Use them to distribute air, water, or hydraulic fluid to five locations from a single supply source. Manifolds have mounting holes, so you can mount from the top.
Anodized aluminum manifolds are the industry standard for the most common types of applications. They are lighter in weight than other metal manifolds and have good corrosion resistance. These manifolds are anodized for a black finish.
316 stainless steel manifolds have excellent corrosion resistance and can handle fuel, gasoline, coolant and other harsh substances.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Water, Hydraulic Fluid
- Temperature Range: -10° to 200° F
- Maximum Pressure: 1,000 psi @ 72° F
- Maximum Vacuum: 27 in. of Hg @ 72° F
Inlet | Outlet | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
No. of Outlets | Thread Size | Thread Pitch, mm | Thread Size | Thread Pitch, mm | Wd., mm | Ht., mm | Outlet Spacing | Color | Each | |
5 | M22 | 1.5 | M20 | 1.5 | 50 | 38 | Standard | Black | 00000000 | 0000000 |
- For Use With: Air, Water, Hydraulic Fluid, Alcohol, Coolant, Cutting Oil, Deionized Water, Diesel Fuel, Fuel Oil, Gasoline, Mineral Oil, Nitrogen
- Temperature Range: -100° to 500° F
- Maximum Pressure: 3,500 psi @ 72° F
- Maximum Vacuum: 27 in. of Hg @ 72° F
Inlet | Outlet | ||||||||
---|---|---|---|---|---|---|---|---|---|
No. of Outlets | Thread Size | Thread Pitch, mm | Thread Size | Thread Pitch, mm | Wd., mm | Ht., mm | Outlet Spacing | Each | |
5 | M22 | 1.5 | M20 | 1.5 | 50 | 38 | Standard | 00000000 | 0000000 |
37° Flared Fittings for Steel Tubing
- For Use With: Air, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil
- 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.
- 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 | |||||
5/8" | __ | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 00000 |
3/4" | __ | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 0000 |
Inch × Metric Sleeve Adapters | |||||
5/8" | 14 | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 0000 |
5/8" | 16 | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 0000 |
Low-Temperature/High-Pressure D.O.T. Push-to-Connect Tube Fittings for Air
- Temperature Range: -40° to 200° F
- Tubing: Use with hard (Durometer 65D) nylon plastic
- Specifications Met:
Cartridges: D.O.T. FMVSS 571, SAE J2494-4, SAE J1131
All other fittings: D.O.T. FMVSS 571
Connect high-pressure brake lines with fittings that won’t crack in frigid temperatures. Often used on commercial trucks and trailers, these fittings meet Department of Transportation FMVSS 571 safety standards. Also known as instant fittings, they connect to tubing with a simple push, and an internal gripping ring and O-ring will hold the tubing tight. A built-in tube support slips inside the tubing to prevent it from collapsing. To disconnect, push on the release ring and pull the tubing out of the fitting. All have good corrosion resistance.
Metric male threads have a gasket to protect against leaks.
For technical drawings and 3-D models, click on a part number.
Thread | |||||||
---|---|---|---|---|---|---|---|
For Tube OD | Size | Pitch, mm | Material | Gasket Material | Max. Pressure | Each | |
Metric Threads | |||||||
1/4" | M22 | 1.5 | Brass | Buna-N Rubber | 250 psi @ 72° F | 00000000 | 000000 |
3/8" | M22 | 1.5 | Brass | Buna-N Rubber | 250 psi @ 72° F | 00000000 | 00000 |
1/2" | M22 | 1.5 | Brass | Buna-N Rubber | 250 psi @ 72° F | 00000000 | 00000 |
5/8" | M22 | 1.5 | Brass | Buna-N Rubber | 250 psi @ 72° F | 00000000 | 00000 |
Fittings with intermittent swivel rotate 360° before and after installation as needed to allow movement in the system and to prevent kinking.
Thread | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
For Tube OD | Size | Pitch, mm | Tube Connection Material | Pipe Connection Material | Gasket Material | Color | Release Ring Material | Max. Pressure | Each | |
Metric Threads | ||||||||||
1/4" | M22 | 1.5 | Nylon Plastic | Brass | Buna-N Rubber | Black | Brass | 250 psi @ 72° F | 00000000 | 000000 |
3/8" | M22 | 1.5 | Nylon Plastic | Brass | Buna-N Rubber | Black | Brass | 250 psi @ 72° F | 00000000 | 00000 |
1/2" | M22 | 1.5 | Nylon Plastic | Brass | Buna-N Rubber | Black | Brass | 250 psi @ 72° F | 00000000 | 00000 |
5/8" | M22 | 1.5 | Nylon Plastic | Brass | Buna-N Rubber | Black | Brass | 250 psi @ 72° F | 00000000 | 00000 |
Fittings with intermittent swivel rotate 360° before and after installation as needed to allow movement in the system and to prevent kinking.
Thread | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
For Tube OD | Size | Pitch, mm | Tube Connection Material | Pipe Connection Material | Gasket Material | Color | Release Ring Material | Max. Pressure | Each | |
Metric Threads | ||||||||||
1/4" | M22 | 1.5 | Nylon Plastic | Brass | Buna-N Rubber | Black | Brass | 250 psi @ 72° F | 00000000 | 000000 |
3/8" | M22 | 1.5 | Nylon Plastic | Brass | Buna-N Rubber | Black | Brass | 250 psi @ 72° F | 00000000 | 00000 |
1/2" | M22 | 1.5 | Nylon Plastic | Brass | Buna-N Rubber | Black | Brass | 250 psi @ 72° F | 00000000 | 00000 |
5/8" | M22 | 1.5 | Nylon Plastic | Brass | Buna-N Rubber | Black | Brass | 250 psi @ 72° F | 00000000 | 00000 |
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.
- 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
For Tube ID | Thread Size | Material | Color | Clarity | Max. Pressure | Temp. Range, °F | Pkg. Qty. | Pkg. | |
Metric Threads | |||||||||
---|---|---|---|---|---|---|---|---|---|
12mm | M22 × 1.5 mm | Nylon Plastic | Gray | Opaque | 145 psi @ 72° F | -40° to 190° | 10 | 00000000 | 000000 |
- 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
For Tube ID | Thread Size | Material | Color | Clarity | Max. Pressure | Temp. Range, °F | Pkg. Qty. | Pkg. | |
Metric Threads | |||||||||
---|---|---|---|---|---|---|---|---|---|
12mm | M22 × 1.5 mm | Nylon Plastic | Gray | Opaque | 145 psi @ 72° F | -40° to 190° | 10 | 00000000 | 000000 |
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.
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.
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
For Hose ID | Thread Size | Gasket Material | Max. Pressure | Temperature Range, °F | Attachment Type | Pkg. Qty. | Pkg. | |
Brass | ||||||||
---|---|---|---|---|---|---|---|---|
1" | M22 × 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 |
19mm | M22 × 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 | ||||||||
1" | M22 × 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 |
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.
- Maximum Pressure: See table
- Maximum Vacuum: 28 in. of Hg @ 72° F
- Temperature Range: -40° to 255° F
- For Hose Manufacturer Series: Parker 801
Metal Garden Hose Fittings
Connect these fittings to rubber or plastic garden hose for a variety of water supply applications.
Brass fittings have good corrosion resistance and are softer than other metal fittings, so they’re easier to thread together. Male BSPP and male metric fittings have a Buna-N washer to ensure a strong seal and resist grease, hydraulic and motor oil, mild chemicals, and water.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||
---|---|---|---|---|---|---|
Garden Hose Trade Size | Size | Pitch, mm | Gasket Material | Lg. | Each | |
Brass | ||||||
3/4 | M22 | 1.5 | Buna-N Rubber | 1 23/64" | 000000000 | 000000 |
Thread | |||||
---|---|---|---|---|---|
Garden Hose Trade Size | Size | Pitch, mm | Lg. | Each | |
Brass | |||||
3/4 | M22 | 1.5 | 1 9/32" | 000000000 | 000000 |
18-8 Stainless Steel Key-Locking Inserts
Made of stainless steel, these inserts have good corrosion resistance. Drive the keys into the surrounding material for a more secure hold than thread-locking inserts. Use them to repair or change threads in soft metals such as aluminum. Inserts may be mildly magnetic. They’re comparable to Keensert® inserts. Installation requires a drill bit, a standard tap, an installation tool, and a hammer.
Choose inserts with a thick wall for greater strength than thin-wall inserts, or to fill a large hole.
For technical drawings and 3-D models, click on a part number.
Black-Phosphate Steel Key-Locking Inserts
A black-phosphate finish provides mild corrosion resistance. Drive the keys into the surrounding material for a more secure hold than thread-locking inserts. Use them to repair or change threads in soft metals such as aluminum. They’re comparable to Keensert® inserts. Installation requires a drill bit, a standard tap, an installation tool, and a hammer.
Choose inserts with a thick wall for greater strength than thin-wall inserts, or to fill a large hole with stripped threads.
For technical drawings and 3-D models, click on a part number.
Key-Locking Inserts with Installation Tool
Drive the keys into the surrounding material for a more secure hold than thread-locking inserts. These inserts are used to repair or convert threads in soft metals such as aluminum. They’re comparable to Keensert® inserts.
Black-phosphate steel inserts are mildly corrosion resistant.
Choose inserts with a thick wall for greater strength than thin-wall inserts, or to fill a large hole.
For technical drawings and 3-D models, click on a part number.
For Tap | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size | Thread Pitch, mm | Thread Spacing | Thread Size | Thread Pitch, mm | Installed Lg. | Drill Bit Size | For Max. Hole Dia. | No. of Locking Keys | No. of Inserts Included | Each | |
Black-Phosphate Steel with Thick Wall | |||||||||||
M22 | 1.5 | Fine | M32 | 2 | 32mm | 30 mm | 30mm | 4 | 3 | 000000000 | 0000000 |