Airtac PC Threaded Straight Connector PC401D-M
The AirTAC Airtac PC Threaded Straight Connector PC401D-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 PC401D-M
The PC401D-M is AirTAC's mini-series PC male connector, a compact one-touch fitting that joins Dia 4 mm soft nylon or polyurethane tubing to a 1/8 in PT male thread. Push the tube into the chuck and the stainless spring gasket grips it instantly for a sealed line; press the POM release ring and the tube slides straight back out. The -M suffix marks the mini series, a shorter body built around the small tube sizes, and the D suffix means the release button arrives in black.
This is the resin and brass spec profile, not the high-temperature metal line: working pressure 0-1.0 MPa, vacuum down to -750 mmHg, proof pressure 1.5 MPa and a temperature window of -20 to +70 C. The chuck and button are POM, the guide is aluminium alloy and the body is brass. The 1/8 in thread comes with sealant already applied, so it seats straight into a PT port without extra tape.
Airtac PC Threaded Straight Connector PC401D-M Technical Specifications
| Model | Airtac PC Threaded Straight Connector PC401D-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 PC401D-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 PC401D-M Is Used
Compact gripper supply on a pick-and-place head
Dia 4 mm tubing is the usual feed for small parallel grippers on assembly heads; the mini body keeps the fitting clear of narrow finger mechanisms while the 1/8 in stud screws into the gripper port.
Pilot line on a lab analysis instrument
Small-bore pilot and purge circuits in analytical and diagnostic equipment suit Dia 4 mm one-touch connections, and the black release button is easy to distinguish from grey lines when a technician bleeds a circuit.
Air signal to a miniature spool valve on packaging machinery
A 1/8 in PT pilot port on a compact spool or shuttle valve pairs directly with this stud, letting a Dia 4 mm signal line from a sensor or manual valve trigger the main stage.
Is the Airtac PC Threaded Straight Connector PC401D-M the Right Part?
Dia 4 mm sits near the bottom of the PC ladder. On the mini series the only step below is Dia 3.2 mm, which AirTAC makes on the PC and PL minis alone; stepping up to Dia 6 mm (PC601-M) doubles the bore for lines feeding larger actuators, and the same 1/8 in thread runs all the way to Dia 12 mm on the standard series. If your port takes an M5x0.8 stud instead of 1/8 in, the PC mini in M5 also supports Dia 4 mm, so you can swap the thread without changing the tube size.
Match the tube exactly: a Dia 4 mm chuck will not seal on 5/32 in or 1/4 in tube, even though the difference looks trivial on a ruler. Check the male thread against the port spec too, since PT is the only standard documented for this catalogue.
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 PC401D-M FAQ
Working pressure is 0-1.0 MPa (0-10 kgf/cm2), it holds vacuum to -750 mmHg (10 Torr), proof pressure is 1.5 MPa, and the temperature range is -20 to +70 C. The fitting joins Dia 4 mm soft nylon or polyurethane tube to a 1/8 in PT male thread in the mini-series body, with a black POM release button as the D-suffix option.
On the PC series the D option changes only the release button to black; the body, dimensions, thread and pressure ratings are identical to the grey standard version. On several other AirTAC one-touch series the D suffix changes the whole body colour, so it is worth checking per series rather than assuming the parts differ.
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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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