Airtac POC Round Thread Straight Connector POC401
The AirTAC Airtac POC Round Thread Straight Connector POC401 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 POC401
The AirTAC POC401 is a POC male connector (compact), the shorter-bodied cousin of the PC straight connector, joining Dia 4 mm soft nylon or polyurethane tubing to a 1/8in PT male thread. Push the tube into the chuck and the stainless spring gasket and POM release ring grip it for a sealed joint; press the release ring and the tube frees off again for rerouting or replacement. The grey body is PBT on a brass stud, and the thread arrives with sealant already applied, so the fitting can be wound straight into the port.
POC401 sits on the resin/brass one-touch spec profile: 0-1.0 MPa working pressure, 1.5 MPa proof pressure, -750 mmHg (10 Torr) vacuum capability, and -20 to +70 C operating temperature. Inside this size the fitting is aimed at low-flow pilot and signal work, where its compact body clears components that a standard PC connector would foul. Note that on POC parts the D suffix changes only the release button colour, not the body.
Airtac POC Round Thread Straight Connector POC401 Technical Specifications
| Model | Airtac POC Round Thread Straight Connector POC401 |
|---|---|
| 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 POC401
| 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 POC401 Is Used
Vacuum ejector signal line
Feeding a Dia 4 nylon line from a compact vacuum ejector on a PCB pick-and-place head, where the POC401's shortened body fits between the ejector body and adjacent sensors.
Valve manifold pilot port
Plugging a 1/8in PT pilot port on a bottling machine's valve manifold island, taking a Dia 4 polyurethane pilot line without overloading the small tapped hole.
Miniature gripper supply
Connecting the supply side of a miniature air gripper on an electronics assembly cell, where Dia 4 tubing keeps the end-effector plumbing light and tightly routed.
Is the Airtac POC Round Thread Straight Connector POC401 the Right Part?
At a 1/8in thread, Dia 4 is the smallest tube POC offers, so there is no smaller bore to step down to on this thread - POC401 is the floor of the 1/8in ladder. Stepping up one size gives POC601 (Dia 6, same 1/8in thread) for branches that feed actuators rather than signals. If your port is an M5x0.8 tapped hole instead, POC40M5 carries the same Dia 4 tube on the smaller thread, which is the usual swap when a valve manifold port turns out to be metric rather than 1/8in.
Match the thread to the port itself, not to the neighbouring tube: the PT thread is what seals, so it must suit the tapped hole, while the tube side must match the tubing OD exactly - a Dia 4 chuck will not reliably hold anything larger or smaller.
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 POC401 FAQ
POC401 is a compact one-touch male connector joining Dia 4 mm tube to a 1/8in PT male thread. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), proof pressure 1.5 MPa, vacuum capability -750 mmHg (10 Torr), and operating temperature -20 to +70 C. It accepts soft nylon or polyurethane tubing and comes as standard in grey with sealant pre-applied to the thread.
No. The chuck set and spring gasket are dimensioned for exactly Dia 4 mm OD tubing; a near-miss size will seat under thumb pressure and then blow off or leak once pressure cycles. If your line is Dia 6, order POC601 for the same 1/8in thread; if your port is M5 rather than 1/8in, order POC40M5 for the same Dia 4 tube.
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