Airtac POC Round Thread Straight Connector POC402
The AirTAC Airtac POC Round Thread Straight Connector POC402 is a genuine male connector (compact) for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
- TypeMale connector (compact)
- SeriesPOC
- Working pressure0 - 1.0 MPa (0 - 10 kgf/cm2)
- Proof pressure1.5 MPa
- Temperature-20 to +70 °C
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac POC Round Thread Straight Connector POC402
The POC402 is AirTAC's compact one-touch male connector, the space-saving version of the PC series. It joins Dia 4 mm soft nylon or polyurethane tubing to a 1/4" PT male thread, using a shorter body that suits port clusters where a standard PC connector would foul its neighbour. To connect, push the tube straight into the chuck until it stops; to release, press the POM release ring and pull the tube free.
This is the resin and brass one-touch profile: working pressure 0-1.0 MPa (0-10 kgf/cm2), vacuum down to -750 mmHg (10 Torr), proof pressure 1.5 MPa and a temperature range of -20 to +70 C. The threaded portion arrives with sealant already applied, so no extra tape is needed on the port, and the brass stud seats directly into a 1/4" PT tapping.
Airtac POC Round Thread Straight Connector POC402 Technical Specifications
| Model | Airtac POC Round Thread Straight Connector POC402 |
|---|---|
| Type | Male connector (compact) |
| Series | POC |
| Connection | Push-in one-touch |
| Working pressure | 0 - 1.0 MPa (0 - 10 kgf/cm2) |
|---|---|
| Negative pressure | -750 mmHg (10 Torr) |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Applicable tubing | Soft nylon or polyurethane tube |
| Thread standard | PT (Rc tapered) unless the code says otherwise |
POM release button and chuck, aluminium-alloy guide, stainless spring gasket, NBR O-ring; body brass or PBT depending on the part. AirTAC publishes flow as a characteristic curve rather than a single figure, so no L/min value is listed.
Model Code: Airtac POC Round Thread Straight Connector POC402
| POC | Male connector (compact). |
|---|---|
| 4 / 6 / 8 / 10 / 12 | Tube outside diameter in mm (3.2 mm exists on the mini series). |
| M5 / 01 / 02 / 03 / 04 | Thread: M5x0.8, 1/8", 1/4", 3/8", 1/2" (M3 on the mini series). |
| D | Black. Blank = grey. |
Fitting & Sealing Notes
- check Cut the tube square and clean before pushing it home, or the seal will leak.
- check Push until it stops, then pull back to check the chuck has gripped.
- check To release, press the collet ring fully in and pull the tube out.
- check Threaded parts arrive with sealant on the thread; M5 sizes use a sealing gasket.
- check Match the tube OD exactly - a 6 mm fitting will not hold 1/4" tube.
Where the Airtac POC Round Thread Straight Connector POC402 Is Used
Compact pick-and-place grippers
Small pneumatic grippers on assembly robots often use 4 mm tubing and sit recessed between tooling plates. The POC402's shortened body reaches ports a standard connector cannot, and 1/4" thread suits the larger tapped ports on some gripper bodies.
Laboratory pneumatic distribution
Benchtop lab apparatus with multiple small actuators benefits from 4 mm lines for light actuation loads. The one-touch release lets technicians reconfigure the pneumatic layout between experiments without tools or tube scrap.
Packaging machine pilot circuits
Pilot signals to directional control valves on cartoning and filling machines typically run in 4 mm tubing. A 1/4" male connector threads straight into the valve's pilot port, and the compact head keeps clearance beside closely spaced valve stations.
Is the Airtac POC Round Thread Straight Connector POC402 the Right Part?
Dia 4 is the smallest tube size this connector is made in, so there is no smaller POC step below it. Stepping up to POC602 doubles the bore and noticeably lowers flow restriction through the fitting, which matters on longer runs; at Dia 4, keep runs short and feed small actuators or pilot lines. If your tube is 6 mm, order POC602, not this part - a Dia 4 chuck will not grip 6 mm tube, and 1/4" nominal tubing at 6.35 mm is likewise out.
Thread-wise, 1/4" is one step above 1/8", and both accept Dia 4 tube in this series; M5 also exists in Dia 4 if your valve manifold has M5 ports. If the port sits in a recess too shallow even for this compact body, a PL elbow or a swivelling PH universal elbow may clear the obstruction where a straight connector cannot.
Quick checklist
- ✓ Tube outside diameter matches exactly
- ✓ Thread size and standard match the port
- ✓ Working pressure within 0 - 1.0 MPa (0 - 10 kgf/cm2)
- ✓ Temperature within -20 to +70 °C
Airtac POC Round Thread Straight Connector POC402 FAQ
It is a compact one-touch male connector joining Dia 4 mm tube to a 1/4" PT male thread. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), proof pressure 1.5 MPa, usable vacuum -750 mmHg (10 Torr), and the operating temperature range is -20 to +70 C with soft nylon or polyurethane tubing.
No. AirTAC ships the threaded stud with sealant pre-applied, so you can screw it straight into a 1/4" PT port without adding PTFE tape. Just check the tube OD is exactly 4 mm before pushing it in - the internal chuck grips only that size, and an undersized or 1/4" (6.35 mm) tube will not seal or hold.
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