Airtac POC Round Thread Straight Connector POC4M5D
The AirTAC Airtac POC Round Thread Straight Connector POC4M5D 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 POC4M5D
The POC4M5D is AirTAC's compact male connector from the one-touch resin family, sized for Dia 4 mm tubing and an M5x0.8 male thread machined to the PT standard. It is the short-body member of the range: same gripping principle as the PC connector, but a slimmer profile that clears neighbouring ports on dense valve stacks and manifold blocks. Push the soft nylon or polyurethane tube straight in and the internal chuck grips it under the full 0-1.0 MPa working pressure; press the release ring and the tube slides back out for rework.
Two details worth knowing before you order. First, the M5 thread is sealed by a dedicated sealing gasket rather than applied thread sealant, so it seats clean into threaded valve and manifold ports. Second, the D suffix on the POC changes only the release button to black - the body itself stays AirTAC's standard grey, unlike the D suffix on other series where the whole body changes colour. The brass-stud, PBT construction carries the full resin spec: 1.5 MPa proof pressure, -750 mmHg (10 Torr) vacuum, and -20 to +70 C.
Airtac POC Round Thread Straight Connector POC4M5D Technical Specifications
| Model | Airtac POC Round Thread Straight Connector POC4M5D |
|---|---|
| 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 POC4M5D
| 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 POC4M5D Is Used
Pilot ports on compact valve manifolds
Many small pneumatic valve manifolds carry M5x0.8 tapped pilot ports side by side. The POC's shortened body keeps neighbouring fittings from fouling, and the gasket-sealed M5 stud avoids loose sealant entering the pilot circuit.
Vacuum ejector feed on a pick-and-place head
On a light robot gripper feeding a vacuum ejector, the Dia 4 line supplies the ejector's air side from an M5 port. Push-fit assembly lets the integrator re-route the tube in minutes when the end-of-arm tooling changes.
Air actuation in benchtop lab automation
Small fluidic and dosing stations often run Dia 4 nylon lines to tiny cylinders and pinch valves. The POM release button and NBR seal tolerate repeated tube changes when a research rig is reconfigured between experiments.
Is the Airtac POC Round Thread Straight Connector POC4M5D the Right Part?
Dia 4 is the smallest tube in the POC ladder, so the only step is up: POC6M5 takes Dia 6 tubing on the same M5 thread and gives you roughly a 50% larger bore area for short pilot runs where flow matters. If your tube is Dia 8 or above, M5 is not offered on POC for those sizes - move to a 1/8in thread connector such as POC801 instead.
Match the M5 thread to the port, not to habit: many compact solenoid valves and vacuum ejectors are drilled M5x0.8, and driving a 1/8in fitting into an adapter there wastes height. And check the tube marking before fitting - a Dia 4 one-touch chuck will not seal reliably on any other OD, including nominal 4.5 mm or 5/32in soft tubing.
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 POC4M5D FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), negative pressure down to -750 mmHg (10 Torr), proof pressure 1.5 MPa, and a temperature range of -20 to +70 C. The fitting joins Dia 4 mm tubing to an M5x0.8 male thread (PT standard). It takes soft nylon or polyurethane tube, seals the M5 thread with a sealing gasket, and the D suffix gives a black release button on a standard grey body.
On the PC and POC series, no. The D suffix changes only the POM release button to black; the body and all pressure ratings stay identical to the grey POC4M5. On many other AirTAC one-touch series the D suffix changes the whole body colour instead, so do not assume the same rule carries across the range.
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