Airtac PC Threaded Straight Connector PC4M3-M
The AirTAC Airtac PC Threaded Straight Connector PC4M3-M 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 PC4M3-M
The PC4M3-M is AirTAC's mini one-touch male connector from the PC series, joining Dia 4 mm soft nylon or polyurethane tubing to an M3 threaded port. The -M suffix marks the mini build: a shorter body and the small M3 thread, a size AirTAC offers only inside the PC and PL mini series. Push the tube home and the stainless spring gasket with the POM chuck grips it for a sealed connection; press the release ring and the tube slides free again.
This is the resin and brass profile, not the metal BP line: working pressure 0-1.0 MPa, vacuum down to -750 mmHg, proof pressure 1.5 MPa and a temperature span of -20 to +70 C. The body is brass with a brass stud, the release button and chuck are POM and the guide is aluminium alloy. Threaded parts arrive with sealant already applied, so the fitting seals on a plain M3 port with no extra tape or compound.
Airtac PC Threaded Straight Connector PC4M3-M Technical Specifications
| Model | Airtac PC Threaded Straight Connector PC4M3-M |
|---|---|
| Type | Male connector |
| Series | PC |
| Connection | Push-in one-touch |
| Size class | Mini series (-M) |
| 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 PC4M3-M
| 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. |
| -M | Mini series. |
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 PC4M3-M Is Used
Lab analyser pilot-air take-off
A Dia 4 line to an M3 pilot port on a compact fluidics manifold in a diagnostic analyser, where the mini body clears adjacent tubing runs that a standard PC fitting would foul.
Micro gripper on a pick-and-place head
Screws straight into the M3 air port of a small gripper on a delta-robot pick-and-place head, feeding Dia 4 polyurethane tube through tight wrist routing.
Mist-lubrication feed on a compact CNC
Connects Dia 4 nylon tube to the M3 lubrication-mist port of a desktop CNC spindle, with the pre-applied thread sealant handling the sealed metric port without tape.
Is the Airtac PC Threaded Straight Connector PC4M3-M the Right Part?
On the tube side you are at the top of the small end of the mini ladder. One step down is Dia 3.2, a size that exists only on the PC and PL mini series, and one step up is Dia 6, which brings a larger bore and higher effective flow but a visibly bigger body. On the thread side M3 is the smallest port AirTAC makes in this series; the next step up is M5x0.8. Match the port exactly and remember that tube OD must match too: a Dia 4 fitting will not seal on 3.2 mm or 5/32in tube.
Choose this shape over a union or elbow when a straight screw-in connection onto a threaded port is all you need. If the tube has to exit at an angle in a cramped housing, the PL mini male elbow is the same family in a bent form. M3 is a signal and pilot-air port size, so keep it on instrumentation, sensing and small-actuator duty rather than main supply lines.
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 PC4M3-M FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), vacuum down to -750 mmHg, proof pressure 1.5 MPa, operating temperature -20 to +70 C. It joins Dia 4 mm soft nylon or polyurethane tube to an M3 thread and belongs to the resin and brass PC mini line, with a brass body and stud, POM release button and chuck, aluminium-alloy guide, stainless spring gasket and NBR O-ring.
No. The chuck set in this fitting grips Dia 4 mm tube only, and tube OD must match exactly or the seal will not form. For 3.2 mm tube use the Dia 3.2 variant of the mini series, a size AirTAC makes only on PC and PL minis. If your port allows a bigger thread, the M5x0.8 version of the same Dia 4 fitting gives you a sturdier stud and a wider choice of downstream Dia 6 ladder parts.
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Covers non-human-caused product damage.
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Standard parts are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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