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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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 | |||||||||
1/2 | 08 | 7/8"-14 | 10 | 5,400 psi @ 72° F | 5,400 psi @ 200° F | Hydraulic Fluid, Oil, Steam, 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 | ||||||
---|---|---|---|---|---|---|
7/8"-14 | 10 | 5,000 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 | |||||||||
---|---|---|---|---|---|---|---|---|---|
1/2 | 08 | 7/8"-14 | 10 | 6,000 psi @ 72° F | Zinc Plated Steel | Air, Hydraulic Fluid, Water | ASTM A108 | 000000000 | 00000 |
Metal Push-On Barbed Hose Fittings for Air and Water
Fittings have sharper barbs than standard barbed hose fittings 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.
Brass fittings are softer than other metal fittings, so they’re easier to thread together. They have good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance, so they’re the best choice for high-humidity environments.
Fittings that swivel until tightened rotate 360° for easy installation.
Fittings with a flared end meet JIC or SAE standards for dimensions. Fittings with a 37° flared end are also known as JIC (Joint Industrial Council) fittings. Fittings with a female 37° and 45° flared end have a dual-angle seat that accepts both 37° and 45° flared fittings.
The optional installation tool (sold separately) allows you to connect large quantities of barbed fittings to push-on hose. Use the built-in cutter to squarely cut the hose without fraying. Next, lubricate either the push-on hose, fitting or both. Then, clamp the hose into the tool’s vise and apply light pressure on the handle to drive into the fitting.
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.
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- Maximum Pressure: 300 psi @ 72° F
- Temperature Range: -20° to 150° F
- Specifications Met: SAE J512, SAE J514
![](/prerenderstable/mvPRE/contents/gfx/imagecache/536/53685k11p2-c01h-digital@halfx_637085690024598591.png?ver=imagenotfound)
Mounting Hole | ||||||||
---|---|---|---|---|---|---|---|---|
For Hose ID Range | Lg. | Ht. | Dp. | Dia. | No. of | Mounting Fasteners Included | Each | |
1/4" to 3/4" | 13 1/2" | 7" | 2 3/8" | 5/8" | 4 | No | 00000000 | 0000000 |
International Standard ISO B Quick-Disconnect Hose Couplings for Hydraulic Fluid
![](/prerenderstable/mvPRE/contents/gfx/imagecache/958/95825k87-95825k82c1-c01h-digital-master1632745094-p9@halfx_637683239044416873.png?ver=imagenotfound)
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
45° Flared Fittings for Copper and Brass Tubing
![](/prerenderstable/mvPRE/contents/gfx/imagecache/506/50635k514-1629725316-p9@halfx_637653041194991414.png?ver=imagenotfound)
- Temperature Range: -65° to 250° F
- Tubing: Use with seamless brass and copper that meets ASTM B280
No sleeve is required to assemble these fittings, which makes for a faster, more convenient installation compared to 37° flared fittings. They require a nut (sold separately) for each tube end. Fittings are also known as refrigeration and SAE fittings. They are brass for good corrosion resistance.
NPTF (Dryseal) threads are compatible with NPT threads.
Copper tube size is the accepted designation of the copper tubing industry, not the actual tube OD.
For technical drawings and 3-D models, click on a part number.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/506/50635k382-@halfx_637768121814857906.png?ver=imagenotfound)
- For Use With: Air, Cutting Oil, Diesel Fuel, Fuel Oil, Mineral Oil, Refrigerant, Water; except adapters for 1/8" and 1" tube OD are not for use with fuel oil
- Specifications Met: See table
For Tube | |||||||
---|---|---|---|---|---|---|---|
OD | Wall Thick. | Pipe Size | Material | Max. Pressure | Specifications Met | Each | |
NPTF Threads | |||||||
5/8" | 0.035" | 1/4 | Brass | 650 psi @ 72° F | SAE J512, SAE J513, UL Listed | 000000000 | 000000 |
5/8" | 0.035" | 3/8 | Brass | 650 psi @ 72° F | SAE J512, SAE J513, UL Listed | 000000000 | 00000 |
5/8" | 0.035" | 1/2 | Brass | 650 psi @ 72° F | SAE J512, SAE J513, UL Listed | 000000000 | 00000 |
5/8" | 0.035" | 3/4 | Brass | 650 psi @ 72° F | SAE J512, SAE J513, UL Listed | 000000000 | 00000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/506/50635k16-@halfx_637768119385735050.png?ver=imagenotfound)
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- For Use With: Air, Cutting Oil, Diesel Fuel, Fuel Oil, Mineral Oil, Refrigerant, Water; except nuts for 1" tube OD are not for use with fuel oil
- Specifications Met: SAE J512, SAE J513, UL Listed; except nuts for 1" tube OD meet SAE J512 and SAE J513 only
37° Flared Fittings for Copper Tubing
![](/prerenderstable/mvPRE/contents/gfx/imagecache/506/50675k262--1e840a4b8e1640204310-p9@halfx_637757795174604543.png?ver=imagenotfound)
- 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
![](/prerenderstable/mvPRE/contents/gfx/imagecache/507/50715kc1-c01f--2feaaaba9421640180848-p9@halfx_637757560571456127.png?ver=imagenotfound)
- 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.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/507/50715k164-@halfx_637756910918078854.png?ver=imagenotfound)
- 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 | |||||||||
---|---|---|---|---|---|---|---|---|---|
5/8" | 1/2 | __ | Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water | 316 Stainless Steel | __ | 6,000 psi @ 72° F | -420° to 1200° | 000000000 | 000000 |
UN/UNF (SAE Straight) Threads | |||||||||
5/8" | __ | 7/8"-14 | Air, Hydraulic Fluid, Isopropyl Alcohol, Water | 316 Stainless Steel | Fluoroelastomer Rubber | 6,000 psi @ 72° F | -15° to 400° | 000000000 | 00000 |
3/4" | __ | 7/8"-14 | Air, Hydraulic Fluid, Isopropyl Alcohol, Water | 316 Stainless Steel | Fluoroelastomer Rubber | 6,000 psi @ 72° F | -15° to 400° | 000000000 | 000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/507/50715k326-@halfx_637756951439222138.png?ver=imagenotfound)
- 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 | |
5/8" | 316 Stainless Steel | 000000000 | 000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/507/50715k318-@halfx_1678482899.png?ver=imagenotfound)
- 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 | |||
5/8" | 316 Stainless Steel | 000000000 | 000000 |
37° Flared Fittings for Steel Tubing
![](/prerenderstable/mvPRE/contents/gfx/imagecache/506/50675k262--1e840a4b8e1640204310-p9@halfx_637757795174604543.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/482/4822t171-@halfx_1676582689.png?ver=imagenotfound)
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.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/506/50695k164-@halfx_637757830931592439.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/482/4822t171-@halfx_1676582689.png?ver=imagenotfound)
Male Threads
with Gasket
- For Use With: See Table
- Temperature Range: See Table
For Tube OD | Pipe Size | Thread Size | Thread Pitch, mm | For Use With | Material | Gasket Material | Max. Pressure | Temp. Range, °F | Each | |
NPTF Threads | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
5/8" | 1/2 | __ | __ | Air, Fuel Oil, Hydraulic Fluid, Mineral Oil | Zinc-Plated Steel | __ | 3,000 psi @ 72° F | -60° to 400° | 000000000 | 00000 |
Metric Threads | ||||||||||
5/8" | __ | M18 | 1.5 | Air, Fuel Oil, Hydraulic Fluid, Mineral Oil | Zinc-Plated Steel | Buna-N Rubber | 2,300 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
5/8" | __ | M20 | 1.5 | Air, Fuel Oil, Hydraulic Fluid, Mineral Oil | Zinc-Plated Steel | Buna-N Rubber | 2,300 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
5/8" | __ | M22 | 1.5 | Air, Fuel Oil, Hydraulic Fluid, Mineral Oil | Zinc-Plated Steel | Buna-N Rubber | 2,300 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
BSPP Threads | ||||||||||
5/8" | 3/8 | __ | __ | Air, Fuel Oil, Hydraulic Fluid, Mineral Oil | Zinc-Plated Steel | Buna-N Rubber | 4,000 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
5/8" | 1/2 | __ | __ | Air, Fuel Oil, Hydraulic Fluid, Mineral Oil | Zinc-Plated Steel | Buna-N Rubber | 4,000 psi @ 72° F | -30° to 200° | 00000000 | 00000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/506/50695k218-@halfx_637757838746691701.png?ver=imagenotfound)
- 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.
Inch × metric sleeve adapters convert the fitting from inch to metric.
![](/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 | |
5/8" | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 00000 |
37° Flared Fittings for Aluminum Tubing
![](/prerenderstable/mvPRE/contents/gfx/imagecache/222/2227k82-1633697317-p9@halfx_637692761356643819.png?ver=imagenotfound)
- 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 | |||||
---|---|---|---|---|---|
5/8" | 1/2 | Anodized 2024 Aluminum | 3,000 psi @ 72° F | 0000000 | 00000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/222/2227k62-@halfx_637763853500839046.png?ver=imagenotfound)
For Tube OD | Nut Material | Max. Pressure | Each | |
5/8" | Anodized 2024 Aluminum | 3,000 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 | |
5/8" | Anodized 2024 Aluminum | 3,000 psi @ 72° F | 0000000 | 00000 |