System of Measurement System of Measurement |
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Connection Style Connection Style |
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| Threaded |
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| Barbed |
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| Quick Disconnect |
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| Push to Connect |
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| Compression |
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| Flared |
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| Quick Clamp |
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| Gasket |
Shape Shape |
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 | Straight |
Material Material |
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Thread Type Thread Type |
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Thread Size Thread Size |
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Pipe Size Pipe Size |
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For Use With For Use With |
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For Tube Material For Tube Material |
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Maximum Pressure Maximum Pressure |
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Length Length | Show |
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Length Length | Hide |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Minimum Temperature Minimum Temperature |
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Maximum Temperature Maximum Temperature |
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Flared Connection Type Flared Connection Type |
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 | Standard |
RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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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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Push-to-Connect Tube Fittings for Air
- Temperature Range: 0° to 170° F
- Tubing: Use with firm (Durometer 95A-45D) polyethylene plastic or polyurethane rubber
- Specifications Met: ISO 14743, except polybutylene plastic fittings
Insert tubing into these fittings and an internal gripping ring and O-ring hold the tubing tight. They are also known as instant fittings. To disconnect, push on the release ring and pull the tubing out of the fitting. Fittings have good corrosion resistance.
Identification rings (sold separately) snap over the release ring so you can color-code your lines.
Clips (sold separately) align and organize your tubing and fittings.
For technical drawings and 3-D models, click on a part number.
Fittings with tube stem insert into the push-to-connect end of another fitting in place of a length of tubing.
| Tube Stem OD | Material | Color | Max. Pressure | Each | |
Polybutylene Plastic | |||||
|---|---|---|---|---|---|
| 1/2" | Polybutylene Plastic | Black | 150 psi @ 72° F | 000000000 | 00000 |
Nickel-Plated Brass Push-to-Connect Tube Fittings for Air
- For Use With: Air, Lubricated Air
- Temperature Range: 0° to 140° F, except plugs and straight connectors are 32° to 140° F
- Tubing: Fittings with Release Ring and Fittings with no Release Type: Use with firm or hard (Durometer 95A-60D) nylon plastic, polyethylene plastic or polyurethane rubber
Fittings with Release Sleeve: Use with firm or hard (Durometer 95A-60D) polyethylene plastic or polyurethane rubber
Made of nickel-plated brass, these fittings have better corrosion resistance than unplated brass fittings. 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 or sleeve and pull the tubing out of the fitting.
For technical drawings and 3-D models, click on a part number.
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through your wall or panel to create an inlet or outlet.
| For Tube OD | Material | Release Type | Max. Pressure | For Hole Dia. | For Max. Wall Thick. | Each | |
| 1/2" | Nickel-Plated Brass | Ring | 230 psi @ 72° F | 1" | 19/32" | 000000000 | 000000 |
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: D.O.T. FMVSS 571
In addition to handling low temperatures, these fittings can also withstand higher pressures than other push-to-connect D.O.T. fittings. Commonly used in air brake lines, they meet Department of Transportation FMVSS 571 safety standards. Fittings connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. Fittings have a built-in tube support that slips inside the tubing to prevent it from collapsing. To disconnect, push on the release ring and pull the tubing out of the fitting. Fittings are also known as instant fittings. They have good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through your wall or panel to create an inlet or outlet.
| For Tube OD | Material | Max. Pressure | For Hole Dia. | For Max. Wall Thick. | Each | |
| 3/8" | Brass | 250 psi @ 72° F | 7/8" | 7/16" | 00000000 | 000000 |
Plastic Compression Tube Fittings for Air
- For Use With: Air, Lubricated Air
- Temperature Range: -30° to 210° F
- Tubing: Use with firm or hard nylon plastic, polyethylene plastic or polypropylene plastic
Lighter in weight than their metal counterparts, these compression fittings are polypropylene. They have excellent impact and abrasion resistance. 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.
Tube supports (sold separately) are recommended if you want to use the fittings with soft nylon, polypropylene, and polyethylene tubing to prevent the tube from collapsing.
For technical drawings and 3-D models, click on a part number.
| For Tube OD | Material | Color | Max. Pressure | Pkg. Qty. | Pkg. | |
| 3/8" | Polypropylene Plastic | White | 220 psi @ 72° F | 5 | 00000000 | 00000 |
Nut | Sleeve | |||||||
|---|---|---|---|---|---|---|---|---|
| For Tube OD | Material | Color | Material | Color | Max. Pressure | Pkg. Qty. | Pkg. | |
| 3/8" | Polypropylene Plastic | White | Polypropylene Plastic | White | 220 psi @ 72° F | 10 | 00000000 | 00000 |
For Tube | Tube Support | ||||||
|---|---|---|---|---|---|---|---|
| OD | ID | Material | Color | Max. Pressure | Pkg. Qty. | Pkg. | |
| 3/8" | 1/4" | Polypropylene Plastic | White | 220 psi @ 72° F | 10 | 00000000 | 00000 |
High-Pressure Quick-Disconnect Tube Couplings for Air
Not only do these chrome-plated brass couplings have excellent corrosion resistance, they also withstand pressures up to 250 psi. Couplings consist of a plug and a socket (sold separately) that join with a latch, so you can frequently connect and disconnect your line. To connect, insert the plug into the socket; to disconnect, press the latch on the socket and remove the plug.
Plugs and Sockets with shut-off have a valve to stop the flow when the coupling is separated, so air won’t leak from your line.
Note: For a complete coupling, order a plug and a socket with the same coupling size.
For technical drawings and 3-D models, click on a part number.
- Temperature Range: -40° to 180° F
- Tubing: Use with soft or firm (Durometer 70A-80A) polyurethane rubber
Barbed plugs and sockets insert into tubing and secure with a clamp.
Through-wall plugs and sockets are also known as bulkhead and panel-mount plugs and sockets; they mount through your wall or panel to create an inlet or outlet.
With Shut-Off | ||||||||
|---|---|---|---|---|---|---|---|---|
| Coupling Size | Plug OD | For Tube ID | Material | Max. Pressure | For Hole Dia. | For Max. Wall Thick. | Each | |
| 1/8 | 5/16" | 1/4" | Chrome-Plated Brass | 250 psi @ 72° F | 1/2" | 19/64" | 00000000 | 000000 |
Stainless Steel Push-to-Connect Tube Fittings for Chemicals
- For Use With: Alcohol, Bleach, Lubricated Air, Nitric Acid, Sodium Carbonate, Sulfuric Acid
- Temperature Range: 0° to 175° F
- Tubing: Use with firm or hard (Durometer 80A-60D) FEP, polyethylene, or PTFE plastic
Fittings are 316 stainless steel, which has excellent chemical resistance and is more durable than plastic. Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. Instead of a release ring, these fittings have a release sleeve that slides back to disconnect tubing.
For technical drawings and 3-D models, click on a part number.
| For Tube OD | Material | Max. Pressure | Each | |
| 3/8" | 316 Stainless Steel | 345 psi @ 72° F | 00000000 | 000000 |
37° Flared Fittings for Stainless Steel Tubing
- 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.
- For Use With: See table
- Temperature Range: See table
| For Tube OD | Thread Size | For Use With | Material | Gasket Material | Max. Pressure | Temp. Range, ° F | Each | |
UN/UNF (SAE Straight) Threads | ||||||||
|---|---|---|---|---|---|---|---|---|
| 3/4" | 1 1/16"-12 | Air, Hydraulic Fluid, Isopropyl Alcohol, Water | 316 Stainless Steel | Fluoroelastomer Rubber | 6,000 psi @ 72° F | -15 to 400° | 000000000 | 000000 |
| 3/4" | 1 3/16"-12 | Air, Hydraulic Fluid, Isopropyl Alcohol, Water | 316 Stainless Steel | Buna-N Rubber | 5,000 psi @ 72° F | -30 to 250° | 000000000 | 00000 |
- 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 | |
| 3/4" | 316 Stainless Steel | 000000000 | 000000 |
- 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 | |||
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| Inch | Sleeve Material | Each | |
Inch | |||
| 3/4" | 316 Stainless Steel | 000000000 | 000000 |
Vibration-Resistant Precision AN 37° Flared Fittings for Stainless Steel Tubing
- For Use With: Air, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil, Water
- Temperature Range: -320° to 500° F
- Tubing: Use with seamless 304 or 316 stainless steel
- Specifications Met: See Table
A PTFE seal on the tube end of these fittings allows for an extra-strong connection in high-vibration applications. The threads on the tube end are Class 3A 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 are 316 stainless steel for excellent 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.
| For Tube OD | Pipe Size | Material | Max. Pressure | Specifications Met | Each | |
ANPT Threads | ||||||
|---|---|---|---|---|---|---|
| 3/4" | 3/4 | 316 Stainless Steel | 3,000 psi @ 72° F | ASTM A380, SAE AS9104/1, AN816-12K, SAE AS9100D | 00000000 | 000000 |
| For Tube OD | Nut Material | Max. Pressure | Specifications Met | Each | |
| 3/4" | 316 Stainless Steel | 3,000 psi @ 72° F | AN818-12K, ASTM A380, SAE AS4841 | 00000000 | 000000 |
| For Tube OD | Sleeve Material | Max. Pressure | Specifications Met | Each | |
| 3/4" | 316 Stainless Steel | 3,000 psi @ 72° F | AN819-12K, ASTM A380, MS20819, SAE AS4841 | 00000000 | 00000 |
High-Polish Gasket Fittings for Stainless Steel Tubing
- For Use With: Air, Dairy, Water
- Temperature Range: See Gaskets
- Tubing:
Inch Butt-Weld Fittings and Quick-Clamp Fittings: Use with welded 304/304L or 316/316L stainless steel that meets ASTM 269 or ASTM 27
Metric Butt-Weld Fittings: Use with welded or seamless 316 stainless steel - Specifications Met:
304 Stainless Steel Adapters, Caps, and Nuts: 3-A Certified 63-04
Gaskets: See table
Join these fittings with a threaded nut and a gasket for a secure connection that grants you easy access to your line. Also known as bevel seat fittings, the fittings are beveled to fit snugly around the gasket, creating a vibration-resistant seal. Fittings are polished to a smooth finish on the interior to prevent product buildup and bacterial growth.
316 stainless steel fittings have excellent corrosion resistance.
Note: For a complete connection, you’ll need a threaded straight adapter, an unthreaded straight adapter, a gasket, and a nut (all sold separately unless noted).
For technical drawings and 3-D models, click on a part number.
For Tube OD | ||||||
|---|---|---|---|---|---|---|
| Gasket Connection | Quick-Clamp Connection | Wall Thick. | Material | Max. Pressure | Each | |
| 2 1/2" | 2 1/2" | 0.065" | 316 Stainless Steel | Not Rated | 0000000 | 0000000 |
| For Tube OD | Nut Material | Max. Pressure | Each | |
| 2 1/2" | 304 Stainless Steel | 400 psi @ 72° F | 000000000 | 000000 |
| For Tube OD | ID | OD | Thick. | Temp. Range, °F | Color | Specifications Met | Each | |
Buna-N Rubber | ||||||||
|---|---|---|---|---|---|---|---|---|
| 2 1/2" | 2.340" | 2.950" | 0.35" | -30° to 200° | Black | __ | 0000000 | 00000 |
PTFE Plastic | ||||||||
| 2 1/2" | 2.340" | 2.950" | 0.35" | -100° to 500° | White | 3-A Certified 20-27 | 0000000 | 0000 |
316 Stainless Steel/PTFE Plastic Blend | ||||||||
| 2 1/2" | 2.340" | 2.950" | 0.32" | -350° to 550° | Gray | 3-A Certified 20-27, FDA Compliant 21 CFR 177.1550, USP VI Certified | 0000000 | 00000 |
37° Flared Fittings for Steel Tubing
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.
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.
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 | |
BSPP Threads | ||||||||
|---|---|---|---|---|---|---|---|---|
| 3/4" | 3/4 | Air, Fuel Oil, Hydraulic Fluid, Mineral Oil | Zinc-Plated Steel | Buna-N Rubber | 4,000 psi @ 72° F | -30° to 200° | 00000000 | 000000 |
- 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 | ||||
| 3/4" | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 00000 |
- For Use With: Air, Fuel Oil, Hydraulic Fluid, Mineral Oil
- Temperature Range: -60° to 400° F
| For Tube OD | Nut Material | Max. Pressure | Each | |
| 3/4" | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 00000 |