Airtac POC Round Thread Straight Connector POC402D
The AirTAC Airtac POC Round Thread Straight Connector POC402D 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 POC402D
The POC402D is an AirTAC POC male connector, the compact-bodied member of the resin one-touch line. It joins 4mm OD soft nylon or polyurethane tubing to a 1/4in PT male thread. Push the tube straight home and the POM chuck grips it against a stainless spring gasket and NBR O-ring; press the release ring and it frees again just as fast. The body is PBT on a brass stud, with an aluminium-alloy guide.
This is the standard resin spec profile: 0 to 1.0 MPa working pressure, -750 mmHg vacuum, 1.5 MPa proof pressure, -20 to +70 C. On the POC series the D suffix changes only the release button to black - the body stays grey and every rating matches the standard part. The 1/4in thread arrives with sealant already applied; only M5 sizes in this catalogue seal with a gasket instead.
Airtac POC Round Thread Straight Connector POC402D Technical Specifications
| Model | Airtac POC Round Thread Straight Connector POC402D |
|---|---|
| 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 POC402D
| 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 POC402D Is Used
Compact robot gripper plumbing
The short POC body reaches into gripper jaws and tool-changer pockets where a full PC connector bottoms out, feeding a 4mm line to the close actuation cylinder.
Pilot signal to a small valve island
A 4mm bore is what most pilot ports want; screw the 1/4in stud straight into the signal port of a packaging machine timing station and it is plumbed in seconds.
Electronics test bench blow-off
Low-flow pickup and blow-off nozzles on semiconductor fixture benches take 4mm line, connect instantly, and release cleanly when the jig changes over.
Is the Airtac POC Round Thread Straight Connector POC402D the Right Part?
Dia 4 is the smallest tube size the POC ladder offers, so the only step up on this thread is Dia 6 (POC602), which opens the bore for pilot lines feeding slightly hungrier small cylinders. On the thread side, 1/4in is the largest port AirTAC pairs with a Dia 4 POC - 1/8in (POC401) and M5 (POC40M5) sit below it for finer valve ports. Tube OD must match exactly: a Dia 4 chuck will not hold 5/32in tube, and forcing an undersize or oversize line into it wrecks the seal.
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 POC402D FAQ
Working pressure 0 to 1.0 MPa (0 to 10 kgf/cm2), vacuum down to -750 mmHg (10 Torr), proof pressure 1.5 MPa, temperature range -20 to +70 C. This SKU is a Dia 4 tube compact male connector with a 1/4in PT male thread and a black release button.
No. On the POC series the D suffix changes only the release button colour to black; the grey body, PBT and brass construction, and every pressure and temperature rating are identical. Always use exactly 4mm OD soft nylon or polyurethane tube - the chuck cannot grip any other size.
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