Airtac PMF Female Thread Bulkhead Straight Through Fitting PMF402
The AirTAC Airtac PMF Female Thread Bulkhead Straight Through Fitting PMF402 is a genuine bulkhead connector for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
- TypeBulkhead connector
- SeriesPMF
- 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 PMF Female Thread Bulkhead Straight Through Fitting PMF402
The PMF402 is an AirTAC PMF bulkhead connector in the resin and brass one-touch line, sized for Dia 4 mm soft nylon or polyurethane tube on a 1/4in PT female port. It is built to sit through a panel or enclosure wall: the fitting body passes through the cut-out and the supplied M12x1 locknut clamps it square to the sheet, so the tube side and the threaded port side stay separated. Push the 4 mm tube into the chuck until it seats and the stainless spring gasket grips it; press the POM release ring to free it again.
This is the standard resin profile, not the metal BPC family: working pressure 0-1.0 MPa (0-10 kgf/cm2), proof pressure 1.5 MPa, vacuum to -750 mmHg (10 Torr), and a temperature window of -20 to +70 C. The body is PBT with a brass stud, the release button and chuck are POM, and the O-ring is NBR. The female thread arrives pre-coated with sealant; for tighter spaces, an M5 variant of the same shape exists in the series.
Airtac PMF Female Thread Bulkhead Straight Through Fitting PMF402 Technical Specifications
| Model | Airtac PMF Female Thread Bulkhead Straight Through Fitting PMF402 |
|---|---|
| Type | Bulkhead connector |
| Series | PMF |
| 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 PMF Female Thread Bulkhead Straight Through Fitting PMF402
| PMF | Bulkhead connector. |
|---|---|
| 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 PMF Female Thread Bulkhead Straight Through Fitting PMF402 Is Used
Control cabinet air feed
Mounted through the wall of an electrical cabinet, the 1/4in female port takes the valve manifold connection inside while the 4 mm tube run reaches sensors and small grippers outside, keeping the enclosure sealed.
Benchtop pneumatic test rig
A lab fixture with quick-change small-bore lines uses the Dia 4 push-in on the fixture side and the 1/4in thread on the regulator panel side, so technicians swap jig tubing without tools.
Compact pick-and-place head
On a small assembly head driving 4 mm micro-cylinders, the bulkhead plate separates the moving tool plate from the fixed frame; the M12x1 locknut holds the fitting rigid while the tool travels.
Is the Airtac PMF Female Thread Bulkhead Straight Through Fitting PMF402 the Right Part?
Dia 4 is the smallest tube bore in the bulkhead range, and on PMF there is nothing below it - the next step up is Dia 6, which changes the locknut to M14x1 and feeds roughly half again the air per stroke through a wider bore. Step down is not possible, so if your actuator line is thinner than 4 mm this series cannot serve it. Thread-wise, 1/4in PT suits a standard valve or cylinder port; if the mating component is an M5 port on a compact manifold, look at the PMF M5 variants instead. Tube OD must match exactly - a Dia 4 chuck will not hold 5/32in or 3 mm tube, and forcing a near-miss size is the most common cause of a slow weep at the fitting.
Choose the bulkhead female shape over a plain PC male connector whenever the air path must cross a fixed barrier: the locknut carries the mechanical load, so no strain transfers to the plastic tube circuit on either side.
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 PMF Female Thread Bulkhead Straight Through Fitting PMF402 FAQ
The PMF402 joins Dia 4 mm soft nylon or polyurethane tube to a 1/4in PT female thread, secured by an M12x1 bulkhead locknut. Working pressure is 0-1.0 MPa (0-10 kgf/cm2), proof pressure 1.5 MPa, negative pressure to -750 mmHg (10 Torr), and the temperature range is -20 to +70 C. It belongs to the resin and brass one-touch line, not the 0.9 MPa metal BPC family.
Drill a hole to suit the fitting body, insert the PMF402 from the front, and run the M12x1 locknut up from behind until the connector sits square against the sheet. Then push the Dia 4 tube fully into the chuck until it stops and tug it gently to confirm the grip. No wrench is needed on the tube side - hand insertion is enough, and the POM release ring frees the tube whenever you need to rework the line.
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