How to Identify and Measure Fittings
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Brass Quick-Turn Tube Couplings for Air
An all-brass body gives these couplings better strength and durability than plastic quick-turn couplings. They have a nickel plating for extra protection against corrosive environments. Also known as luer lock couplings, they consist of a plug and socket (sold separately) that connect with a half turn. They have a compact body, so they’re easy to fit in tight spaces. Plugs and sockets are open-flow style, so there is no shut-off valve to stop the flow when the coupling is separated. They have a universal connection, so the plugs will connect to any of the sockets, regardless of the pipe or tube size.
Note: For a complete coupling, order a plug and a socket.
For technical drawings and 3-D models, click on a part number.
- Temperature Range: -100° to 300° F
- Tubing: Use with soft or firm (Durometer 35A-95A) polyurethane rubber, PVC plastic or silicone rubber
Barbed plugs and sockets insert into tubing and secure with a clamp.
- Temperature Range: -100° to 300° F
| Pipe Size  | Thread Size | Thread Pitch, mm | Material | Max. Pressure | Features | Each | |
NPT Threads | |||||||
|---|---|---|---|---|---|---|---|
| 1/16 | __ | __ | Nickel-Plated Brass | 30 psi @ 72° F | __ | 00000000 | 000000 |
| 1/8 | __ | __ | Nickel-Plated Brass | 30 psi @ 72° F | __ | 000000000 | 0000 |
| 1/4 | __ | __ | Nickel-Plated Brass | 30 psi @ 72° F | __ | 000000000 | 0000 |
Metric Threads | |||||||
| __ | M5 | 0.8 | Nickel-Plated Brass | 30 psi @ 72° F | Acrylic Thread Sealant | 00000000 | 00000 |
| __ | M6 | 1 | Nickel-Plated Brass | 30 psi @ 72° F | Acrylic Thread Sealant | 00000000 | 00000 |
| __ | M8 | 1 | Nickel-Plated Brass | 30 psi @ 72° F | Acrylic Thread Sealant | 00000000 | 00000 |
UN/UNF (SAE Straight) Threads | |||||||
| __ | 10-32 | __ | Nickel-Plated Brass | 30 psi @ 72° F | __ | 000000000 | 0000 |
| __ | 1/4"-28 | __ | Nickel-Plated Brass | 30 psi @ 72° F | __ | 00000000 | 0000 |
- Temperature Range: -100° to 300° F
| Pipe Size | Thread Size | Material | Max. Pressure | Each | |
NPT Threads | |||||
|---|---|---|---|---|---|
| 1/16 | __ | Nickel-Plated Brass | 30 psi @ 72° F | 00000000 | 000000 |
| 1/8 | __ | Nickel-Plated Brass | 30 psi @ 72° F | 00000000 | 00000 |
| 1/4 | __ | Nickel-Plated Brass | 30 psi @ 72° F | 00000000 | 00000 |
UN/UNF (SAE Straight) Threads | |||||
| __ | 10-32 | Nickel-Plated Brass | 30 psi @ 72° F | 00000000 | 0000 |
| __ | 1/4"-28 | Nickel-Plated Brass | 30 psi @ 72° F | 00000000 | 0000 |
- Temperature Range: -100° to 300° F
- Tubing: Use with soft or firm (Durometer 35A-95A) polyurethane rubber, PVC plastic or silicone rubber
| Material | Max. Pressure | Each | |
| Nickel-Plated Brass | 30 psi @ 72° F | 000000000 | 00000 |
- Temperature Range: -100° to 300° F
Plugs | |||
|---|---|---|---|
| Material | Max. Pressure | Each | |
| Nickel-Plated Brass | 30 psi @ 72° F | 000000000 | 00000 |