How to Identify and Measure Fittings
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Precision Extreme-Pressure Stainless Steel Threaded Pipe Fittings
Made to tighter tolerances than other stainless steel pipe fittings, these are also known as instrumentation fittings. The male threads are rolled for extra strength in extreme-pressure applications. Fittings are commonly used to connect equipment in gas and hydraulic fluid lines. They are 316 stainless steel for excellent corrosion resistance. 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.
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(SAE Straight) Male
Threads with Gasket
- For Use With:
NPT × BSPP: Natural Gas, Water
NPT × BSPT and UN/UNF (SAE Straight) Male × NPT Male: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water - Specifications Met:
NPT × BSPP: ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A276, ASTM A479, ISO 228.1, ISO 228.2, ISO BS 2779
NPT × BSPT: ASME B1.20.1, ASME B31.1, ASME B31.3, ISO 7.1, ISO BS2.1
UN/UNF (SAE Straight) Male × NPT Male: ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A182, ASTM A276, ASTM A479, SAE J1926
Thread Size (A) | Dash Size (A) | Pipe Size (B) | Dash Size (B) | Max. Pressure | Max. Steam Pressure | Each | |
UN/UNF (SAE Straight) Male × NPT Male | |||||||
---|---|---|---|---|---|---|---|
1 5/16"-12 | 18 | 1 | 18 | 2,900 psi @ 72° F | 2,900 psi @ 300° F | 000000000 | 000000 |
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.
NPTF (Dryseal) threads are compatible with NPT threads. 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.
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(SAE Straight) Male
Threads with Gasket
- For Use With: See table
- Specifications Met: See table
316 Stainless Steel | |||||||||
---|---|---|---|---|---|---|---|---|---|
Pipe Size (A) | Dash Size (A) | Thread Size (B) | Dash Size (B) | Max. Pressure | Max. Steam Pressure | For Use With | Specifications Met | Each | |
NPTF Male × UN/UNF (SAE Straight) Male | |||||||||
3/4 | 12 | 1 5/16"-12 | 16 | 3,600 psi @ 72° F | 3,600 psi @ 200° F | Hydraulic Fluid, Oil, Steam, Water | SAE J514 | 000000000 | 000000 |
1 | 16 | 1 5/16"-12 | 16 | 5,400 psi @ 72° F | __ | Hydraulic Fluid (Petroleum Base), Oil, Water | SAE J514 | 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.
NPTF (Dryseal) threads are compatible with NPT threads. UN/UNF (SAE Straight) threads are also known as O-ring boss threads; the 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.
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(SAE Straight) Male
Threads with Gasket
- For Use With: See table
- Specifications Met:
NPTF and UN/UNF (SAE Straight): ASTM A108
BSPP: ISO 1179, ISO 8434-6
BSPT: DIN EN 10226-1, ISO 7-1
Thread Size | Dash Size | Max. Pressure | Material | For Use With | Each | |
UN/UNF (SAE Straight) Male | ||||||
---|---|---|---|---|---|---|
1 5/16"-12 | 16 | 4,000 psi @ 72° F | Zinc Plated Steel | Air, Hydraulic Fluid, Water | 000000000 | 000000 |
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(SAE Straight) Male
Threads with Gasket
- For Use With: See table
- Specifications Met: See table
Pipe Size (A) | Dash Size (A) | Thread Size (B) | Dash Size (B) | Max. Pressure | Material | For Use With | Specifications Met | Each | |
NPTF Male × UN/UNF (SAE Straight) Male | |||||||||
---|---|---|---|---|---|---|---|---|---|
3/4 | 12 | 1 5/16"-12 | 16 | 4,500 psi @ 72° F | Zinc Plated Steel | Air, Hydraulic Fluid, Water | ASTM A108 | 000000000 | 000000 |
1 | 16 | 1 5/16"-12 | 16 | 4,500 psi @ 72° F | Zinc Plated Steel | Air, Hydraulic Fluid, Water | ASTM A108 | 000000000 | 00000 |
Screw-On Hose Fittings for Hydraulic Fluid
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These two-piece fittings screw directly onto rubber hose without the need for a separate adapter. To install, separate the two pieces of the fitting (the hose-end portion and the nipple portion). Screw the hose-end portion of the fitting onto the hose, then thread the nipple portion of the fitting into the hose-end portion. When assembled, the fitting compresses against the hose, forming a strong seal. Also known as reusable fittings, they can be unscrewed from the hose end and used on a new hose.
Zinc-plated steel fittings offer better strength and durability than 316 stainless steel fittings. They have fair corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.
Fittings with a 37° flared end are also known as JIC (Joint Industrial Council) fittings. They swivel 360° until tightened for easy installation.
Notes: Fittings are only for use with hydraulic hose.
For technical drawings and 3-D models, click on a part number.
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- Maximum Pressure: See table
- Temperature Range: -40° to 212° F
- For Hose Manufacturer Series:
Parker 42 Series Fittings: Parker 422 SAE J517 100R1AT
Parker 30 Series Fittings: Parker 302 SAE J517 100R2AT - Specifications Met: See table
Fittings | Hose | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
For Hose | Per Ft. | |||||||||||
ID | OD | For Tube OD | Thread Size | Thread Type | Dash Size | Max. Pressure | Specifications Met | Each | 1-99 | 100-Up | ||
Zinc-Plated Steel—Parker 42 Series | ||||||||||||
1" | 1 7/16" | 1" | 1 5/16"-12 | UN/UNF (JIC) | 16 | 1,250 psi @ 72° F | SAE J516 | 00000000 | 0000000 | 00000000 | 000000 | 000000 |
316 Stainless Steel—Parker 30 Series | ||||||||||||
1" | 1 1/2" | 1" | 1 5/16"-12 | UN/UNF (JIC) | 16 | 2,400 psi @ 72° F | SAE J514 | 0000000 | 000000 | 0000000 | 00000 | 00000 |
International Standard ISO B Quick-Disconnect Hose Couplings for Hydraulic Fluid
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A complete coupling consists of a plug and a socket (both sold separately) that connect and disconnect quickly. Use them if you need frequent access to a hydraulic hose line. All of the International Standard ISO B quick-disconnect plugs are compatible with any of the International Standard ISO B quick-disconnect sockets of the same coupling size, regardless of the pipe size. Couplings meet ISO 7241-1 Series B dimensional and performance standards and are compatible with Parker 60 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.
Plugs are also known as nipples.
Zinc-plated steel is stronger and more durable than other metals. It has fair corrosion resistance.
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.
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- Maximum Pressure: See table
- Maximum Vacuum: 27 in. of Hg @ 72° F
- Temperature Range: -40° to 250° F
- Compatible With: ISO 7241-1 Series B, Parker 60
- Specifications Met: ISO 7241-1 Series B
37° Flared Fittings for Copper Tubing
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- For Use With: Air, Fuel Oil, Mineral Oil, Water
- Temperature Range: -40° to 400° F
- Tubing: Use with seamless copper
- Specifications Met: ISO 8434, MIL-F-18866, 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 can handle higher pressures than 45° flared fittings. Fittings are brass for good corrosion resistance. They require a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately.
For technical drawings and 3-D models, click on a part number.
37° Flared Fittings for Stainless Steel Tubing
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- Tubing: Use with welded or seamless 304 or 316 stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
- Specifications Met: ISO 8434, SAE J514, except fittings with BSPP and BSPT threads meet SAE J514 only
Also known as JIC (Joint Industrial Council) fittings, these provide a tight metal-to-metal seal on tubing that is flared to 37°. They are 316 stainless steel for excellent corrosion resistance. Fittings require a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately.
BSPP threads and UN/UNF (SAE Straight) male threads have a gasket to protect against leaks. 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.
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- For Use With: See table
- Temperature Range: See table
For Tube OD | Pipe Size | Thread Size | For Use With | Material | Gasket Material | Max. Pressure | Temp. Range, °F | Each | |
NPT Threads | |||||||||
---|---|---|---|---|---|---|---|---|---|
1" | 1 | __ | Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water | 316 Stainless Steel | __ | 3,500 psi @ 72° F | -420° to 1200° | 000000000 | 000000 |
UN/UNF (SAE Straight) Threads | |||||||||
1" | __ | 1 5/16"-12 | Air, Hydraulic Fluid, Isopropyl Alcohol, Water | 316 Stainless Steel | Fluoroelastomer Rubber | 5,000 psi @ 72° F | -15° to 400° | 000000000 | 000000 |
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- For Use With: Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water
- Temperature Range: -420° to 1,200° F
For Tube OD | Nut Material | Each | |
1" | 316 Stainless Steel | 000000000 | 000000 |
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- For Use With: Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water
- Temperature Range: -420° to 1,200° F
Use these sleeves with a nut and fitting to provide a tight metal-to-metal seal on stainless steel tubing that is flared to 37°. Sleeves are 316 stainless steel for excellent corrosion resistance. They are also known as ferrules.
For Tube OD | |||
---|---|---|---|
Inch | Sleeve Material | Each | |
Inch | |||
1" | 316 Stainless Steel | 000000000 | 000000 |
Precision AN 37° Flared Fittings for Stainless Steel Tubing
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- For Use With: Air, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil, Water
- Temperature Range: -320° to 1200° F
- Tubing: Use with seamless 304 or 316 stainless steel
- Specifications Met: See Table
The threads on the tube end of these fittings are Class 3A or 3B and adhere to tighter tolerances than other 37° flared fittings. They are made to exact AS (formerly AN) specifications and provide a tight metal-to-metal seal on tubing that is flared to 37°. Fittings require a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately.
304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
37° Flared Fittings for Steel Tubing
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Male Threads
with Gasket
- 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.
NPTF (Dryseal) threads are compatible with NPT threads.
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.
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Male Threads
with Gasket
- For Use With: See Table
- Temperature Range: See Table
For Tube OD | Pipe Size | For Use With | Material | Gasket Material | Max. Pressure | Temp. Range, °F | Each | |
NPTF Threads | ||||||||
---|---|---|---|---|---|---|---|---|
1" | 1 | Air, Fuel Oil, Hydraulic Fluid, Mineral Oil | Zinc-Plated Steel | __ | 3,500 psi @ 72° F | -60° to 400° | 000000000 | 00000 |
BSPP Threads | ||||||||
1" | 1 1/4 | Air, Fuel Oil, Hydraulic Fluid, Mineral Oil | Zinc-Plated Steel | Buna-N Rubber | 2,500 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
BSPT Threads | ||||||||
1" | 1 | Air, Fuel Oil, Hydraulic Fluid, Mineral Oil | Zinc-Plated Steel | __ | 3,500 psi @ 72° F | -60° to 400° | 00000000 | 00000 |
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- 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.
For Tube OD | ||||
---|---|---|---|---|
Inch | Sleeve Material | Max. Pressure | Each | |
Inch Sleeves | ||||
1" | Zinc-Plated Steel | 2,500 psi @ 72° F | 000000000 | 00000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/506/50695k226-@halfx_637757839226312497.png?ver=imagenotfound)
- For Use With: Air, Fuel Oil, Hydraulic Fluid, Mineral Oil
- Temperature Range: -60° to 400° F
For Tube OD | Nut Material | Max. Pressure | Each | |
1" | Zinc-Plated Steel | 2,500 psi @ 72° F | 000000000 | 00000 |
37° Flared Fittings for Aluminum Tubing
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- For Use With: Air, Coolant, Gasoline, Hydraulic Fluid, Water
- Temperature Range: -60° to 400° F
- Tubing: Use with seamless aluminum
Also known as JIC (Joint Industrial Council) fittings, these provide a tight metal-to-metal seal on tubing that is flared to 37°. Fittings are aluminum, which is lightweight with good corrosion resistance. They require a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately.
For technical drawings and 3-D models, click on a part number.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/222/2227k12-@halfx_637763848811725846.png?ver=imagenotfound)
For Tube OD | Pipe Size | Material | Max. Pressure | Each | |
NPT Threads | |||||
---|---|---|---|---|---|
1" | 1 | Anodized 2024 Aluminum | 1,500 psi @ 72° F | 0000000 | 000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/222/2227k62-@halfx_637763853500839046.png?ver=imagenotfound)
For Tube OD | Nut Material | Max. Pressure | Each | |
1" | Anodized 2024 Aluminum | 1,500 psi @ 72° F | 0000000 | 00000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/222/2227k72-@halfx_637763854491899697.png?ver=imagenotfound)
For Tube OD | Sleeve Material | Max. Pressure | Each | |
1" | Anodized 2024 Aluminum | 1,500 psi @ 72° F | 0000000 | 00000 |