Compatible Plug Shape Compatible Plug Shape |
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 | ARO |
 | European |
 | Industrial |
 | Tru-Flate |
 | Lincoln |
Quick-Disconnect Component Quick-DisconnectComponent |
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| Plug | Socket |
 | |
| Plug and Socket Set |
Connection Style Connection Style |
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| Threaded |
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| Barbed |
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| Quick Disconnect |
For Use With For Use With |
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Flow Control Flow Control |
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 | Open |
 | With Shut- Off |
Shape Shape |
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 | Straight |
Type Type |
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 | Adapter |
Socket Locking Type Socket Locking Type |
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System of Measurement System of Measurement |
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Length Length |
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Maximum Pressure Maximum Pressure |
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Maximum Temperature Maximum Temperature |
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Minimum Temperature Minimum Temperature |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Maximum Vacuum Maximum Vacuum |
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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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About Hose
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Universal Quick-Disconnect Hose Sockets for Air
Sockets accommodate five common plug shapes: Industrial, ARO, Lincoln, Tru-Flate, and European. Use them with a plug of the same coupling size to frequently connect and disconnect your line. Sockets are push-to-connect style. To connect, push the plug into the socket until you hear a click. To disconnect, slide the sleeve on the socket forward until the plug ejects. Sockets have a shut-off valve that stops the flow when the coupling is separated, so air won’t leak from the line. They are brass for good corrosion resistance.
Sockets with a push-on barbed end have sharp barb that grip rubber push-on hose with no clamps or ferrules required. the more you pull on the fittings, the tighter the hose will grip. To ensure proper connection, the barbed end has to be pushed in all the way, with the hose end concealed by the ring.
Tru-Flate Quick-Disconnect Hose Couplings for Air
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 line. All Tru-Flate plugs are compatible with any of the Tru-Flate sockets of the same coupling size, regardless of the pipe size or barbed hose ID. They are also known as automotive couplings.
Plugs are also known as nipples.
Sockets have a shut-off valve that stops the flow when the coupling is separated, so air won’t leak from the line.
Plugs and sockets with a barbed end insert into plastic or rubber hose and secure with a clamp or a crimp-on hose ferrule.
Sleeve-lock sockets connect by sliding back the sleeve on the socket, inserting the plug, and releasing the sleeve. To disconnect, slide the sleeve back and pull out the plug.
Push-to-connect sockets are easier to connect than sleeve-lock sockets. Connect by pushing the plug into the socket until you hear a click. To disconnect, slide the sleeve on the socket forward until the plug ejects.
Push-button sockets are the easiest to connect and disconnect. Push the plug into the socket until you hear a click. To disconnect, push the button on the socket and the plug will eject.
Zinc-plated steel is stronger and more durable than other metals. It has fair corrosion resistance, so it should be used primarily in dry environments. Brass is softer than other metals, so it’s easier to thread together. It has good corrosion resistance. Nylon has good corrosion resistance, is nonmarring, and won’t scratch delicate surfaces.
NPTF (Dryseal) threads are compatible with NPT threads.
Note: To ensure a correct fit, make sure that the plug and socket have the same coupling size.
For technical drawings and 3-D models, click on a part number.
Plugs, NPT Male Threaded Pipe  
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Plugs, BSPT Male Threaded Pipe
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Plugs, NPTF Female Threaded Pipe 
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Plugs, BSPP Female Threaded Pipe
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Plugs, Barbed Hose 
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Push-to-Connect Sockets, NPT Male Threaded Pipe 
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Push-to-Connect Sockets, BSPT Male Threaded Pipe
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Push-to-Connect Sockets, NPT Female Threaded Pipe 
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Push-to-Connect Sockets, Barbed Hose 
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Sleeve-Lock Sockets, NPTF Male Threaded Pipe 
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Sleeve-Lock Sockets, NPTF Female Threaded Pipe 
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Sleeve-Lock Sockets, Barbed Hose 
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Push-Button Sockets, NPT Male Threaded Pipe | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Push-Button Sockets, NPT Female Threaded Pipe 
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Push-Button Sockets, Barbed Hose 
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Plug and Push-to-Connect Socket Sets, NPT Male Threaded Pipe 
| Plug and Push-to-Connect Socket Sets, NPT Female Threaded Pipe 
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Plug and Push-to-Connect Socket Sets, NPT Male × NPT Female Threaded Pipe 
| Plug and Push-to-Connect Socket Sets, NPT Female × NPT Male Threaded Pipe 
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Plug and Push-to-Connect Socket Sets, Barbed Hose × NPT Male Threaded Pipe 
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Air Hose with Tru-Flate Quick-Disconnect Socket and Plug
- Temperature Range: -40° to 200° F
- Material: EPDM Rubber
- Color: Black or Red
Hose is made of EPDM rubber, which is the most common material for air applications.
For any combination of hose length and fittings, please select 5138K999. Specify hose color (red or black) and length, and fitting type, material, and size on both ends.
| Coupling Size | ID | OD | Bend Radius | Choose a Color | Other Lengths, ft. | 1 ft. | 2 ft. | 3 ft. | 4 ft. | 5 ft. | 10 ft. | 15 ft. | 25 ft. | 50 ft. | 75 ft. | 100 ft. | |
Brass Tru-Flate Quick-Disconnect Female Socket × Steel Tru-Flate Quick-Disconnect Male Plug | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
200 psi @ 72° F Max. Pressure | |||||||||||||||||
| 1/4 × 1/4 | 1/4" | 1/2" | 1 1/2" | 1 to 500 | 000000 | ||||||||||||
Steel Tru-Flate Quick-Disconnect Female Socket × Steel Tru-Flate Quick-Disconnect Male Plug | |||||||||||||||||
200 psi @ 72° F Max. Pressure | |||||||||||||||||
| 3/8 × 3/8 | 3/8" | 11/16" | 2 1/4" | 1 to 500 | 000000 | ||||||||||||
| 1/2 × 1/2 | 1/2" | 13/16" | 3" | 1 to 500 | 000000 | ||||||||||||
Air Hose with Tru-Flate Quick-Disconnect Socket and Male Threaded Fitting
- Temperature Range: -40° to 200° F
- Material: EPDM Rubber
- Color: Black or Red
Hose is made of EPDM rubber, which is the most common material for air applications.
For any combination of hose length and fittings, please select 5138K999. Specify hose color (red or black) and length, and fitting type, material, and size on both ends.
| Coupling Size | Pipe Size  | ID | OD | Bend Radius | Choose a Color | Other Lengths, ft. | 1 ft. | 2 ft. | 3 ft. | 4 ft. | 5 ft. | 10 ft. | 15 ft. | 25 ft. | 50 ft. | 75 ft. | 100 ft. | |
Brass Tru-Flate Quick-Disconnect Female Socket × Brass Threaded NPT Male | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
200 psi @ 72° F Max. Pressure | ||||||||||||||||||
| 1/4 | 1/4 | 1/4" | 1/2" | 1 1/2" | 1 to 500 | 000000 | ||||||||||||
Steel Tru-Flate Quick-Disconnect Female Socket × Brass Threaded NPT Male | ||||||||||||||||||
200 psi @ 72° F Max. Pressure | ||||||||||||||||||
| 3/8 | 3/8 | 3/8" | 11/16" | 2 1/4" | 1 to 500 | 0000000 | ||||||||||||
| 1/2 | 1/2 | 1/2" | 13/16" | 3" | 1 to 500 | 0000000 | ||||||||||||
Lightweight Air Hose with Tru-Flate Quick-Disconnect Socket and Plug
- Temperature Range: -10° to 155° F
- Material: PVC
- Color: Blue, Gray, Red, or Yellow
Hose is PVC, so it’s lighter and less cumbersome than rubber hose.
| Coupling Size | ID | OD | Bend Radius | Choose a Color | Other Lengths, ft. | 1 ft. | 2 ft. | 3 ft. | 4 ft. | 5 ft. | 10 ft. | 15 ft. | 20 ft. | 25 ft. | 50 ft. | 75 ft. | 100 ft. | |
Brass Tru-Flate Quick-Disconnect Female Socket × Steel Tru-Flate Quick-Disconnect Male Plug | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
300 psi @ 72° F Max. Pressure | ||||||||||||||||||
| 1/4 × 1/4 | 3/8" | 5/8" | 4" | 1 to 100 | 00000000 | |||||||||||||
Steel Tru-Flate Quick-Disconnect Female Socket × Steel Tru-Flate Quick-Disconnect Male Plug | ||||||||||||||||||
300 psi @ 72° F Max. Pressure | ||||||||||||||||||
| 1/2 × 1/2 | 1/2" | 13/16" | 6" | 1 to 100 | 00000000 | |||||||||||||