Airtac PC Threaded Straight Connector PC402D
The AirTAC Airtac PC Threaded Straight Connector PC402D is a genuine male connector for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
- TypeMale connector
- SeriesPC
- 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 PC Threaded Straight Connector PC402D
The PC402D is an AirTAC PC series one-touch male connector in the black-button variant: a Dia 4 mm tube lands on a male 1/4" PT thread. Push the soft nylon or polyurethane tubing straight into the chuck and the stainless spring gasket plus NBR O-ring lock it against pressure; press the POM release ring and the tube pulls free. This is the resin/brass spec profile, so it is rated 0-1.0 MPa working pressure with -750 mmHg vacuum, a 1.5 MPa proof pressure and a -20 to +70 C temperature window - it is not part of the 0.9 MPa / 150 C metal BPC line.
Two details matter on this code. On the PC series the D suffix changes only the release button to black; the body stays the standard grey PBT and brass construction, which helps when technicians colour-code circuit roles on shared machines. And because the release button is POM while the threaded stud below is brass with sealant pre-applied, the PC402D screws straight into a 1/4" PT port without extra tape or compound.
Airtac PC Threaded Straight Connector PC402D Technical Specifications
| Model | Airtac PC Threaded Straight Connector PC402D |
|---|---|
| Type | Male connector |
| Series | PC |
| 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 PC Threaded Straight Connector PC402D
| PC | Male 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 PC Threaded Straight Connector PC402D Is Used
Manifold pilot tap on a packaging machine
A 1/4" PT port on the machine's air manifold is far bigger than a Dia 4 pilot line to a poppet or solenoid valve. The PC402D bridges that size gap at the port, and the black button marks it as the low-flow pilot circuit during maintenance.
Vacuum pick line on electronics assembly
A pick-and-place head on an SMT bench running -750 mmHg vacuum is commonly plumbed in Dia 4 polyurethane from a 1/4" threaded venturi port. The resin body's -20 to +70 C window and NBR seal handle the duty without a metal fitting.
Small air-jet nozzle feed in a print cabinet
Dust-blow nozzles on a printing or labelling line draw tiny volumes, so a thin Dia 4 tube from a 1/4" threaded valve outlet is enough. The straight PC shape threads into the valve while the tube runs unobstructed to the nozzle.
Is the Airtac PC Threaded Straight Connector PC402D the Right Part?
Dia 4 is the smallest tube size AirTAC makes in this catalogue, so there is nothing below it - PC40M5 is the only other way to buy a Dia 4 male connector, swapping the 1/4" thread for an M5x0.8 port sealed by a gasket instead of sealant. Stepping up, PC602 takes the same 1/4" thread on a Dia 6 bore: the fitting body grows slightly, but the real change is flow headroom for short cylinder feeds. If your port is a genuinely large 1/4" hole feeding only a thin pilot line, this SKU is exactly the mismatch-corrector for that job.
Tube OD must match to the decimal - a PC402D grips Dia 4 mm soft nylon or polyurethane only and will not seal on 6 mm or on inch 1/8" tube. Threaded parts arrive with sealant on the PT thread, so do not remove it or add a second layer that can block the orifice.
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 PC Threaded Straight Connector PC402D FAQ
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. It joins Dia 4 mm soft nylon or polyurethane tube to a male 1/4" PT thread. The D suffix makes the release button black; the grey body, POM chuck, brass stud and NBR O-ring match the standard PC series. AirTAC publishes capacity as a characteristic curve only, not as a Cv or L/min figure - for sizing, treat the Dia 4 bore as the limit.
Third-party soft nylon or polyurethane tube works if its OD is exactly 4.0 mm - the chuck grips the OD to the decimal, so 5/32" (3.97 mm) inch tube or 6 mm tube will not seal. Check the wall too: the fitting is dimensioned for standard metric pneumatic tube, and stiff or over-thick-wall hose may not seat past the spring gasket.
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