Airtac PC Threaded Straight Connector PC401D-S
SUS304 stainless variant (-S)The AirTAC Airtac PC Threaded Straight Connector PC401D-S 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-S
The PC401D-S is AirTAC's PC male connector in the SUS304 stainless-steel variant, joining Dia 4 mm soft nylon or polyurethane tubing to a 1/4in PT male thread. Push the tube into the chuck and the stainless spring gasket and POM chuck grip it for a pressure-tight joint; press the release ring and the tube slides straight back out. The D suffix on the PC series changes the release button to black, and on this stainless version the button contrasts visibly against the bare 304 body, which makes released connections easy to spot during maintenance.
This belongs to the standard resin-line pressure profile, not the metal BP line: 0-1.0 MPa working pressure, -750 mmHg vacuum, 1.5 MPa proof pressure and -20 to +70 C. What the -S changes is the material: on PC and POC straight connectors the body itself is stainless steel 304 and the whole part is copper-free, while the chuck and button stay POM, the guide stays aluminium alloy and the seal is an NBR O-ring. Ratings, dimensions and the tube/thread ladder are identical to the brass-body PC401D.
Airtac PC Threaded Straight Connector PC401D-S Technical Specifications
| Model | Airtac PC Threaded Straight Connector PC401D-S |
|---|---|
| Type | Male connector |
| Series | PC |
| Connection | Push-in one-touch |
| Body material | Stainless steel 304 (-S variant) |
| 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. Stainless (-S): SUS304 in place of brass - a solid SUS304 body on the PC and POC straight connectors, and a PBT body with a SUS304 stud on the elbow, tee and branch shapes. Working pressure, proof pressure and temperature are unchanged from the standard version. 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-S
| 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. |
| -S | Stainless-steel body. |
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-S Is Used
Electronics pick-and-place heads
Feeds Dia 4 tubing out to compact grippers and vacuum ejectors on SMT pick-and-place heads, where the copper-free stainless body avoids copper particle shedding near sensitive assemblies.
Plating and chemical rinse stations
Suspending small rinse nozzles and air-actuated valves above plating tanks, where bare brass would corrode and copper ions could contaminate the bath chemistry.
Compact sensor and jet manifolds
Screws directly into a 1/4in PT manifold port to feed an air jet, cooling blast or sensor purge line, with the black release button giving a clear visual cue at the panel.
Is the Airtac PC Threaded Straight Connector PC401D-S the Right Part?
Dia 4 is the smallest tube size the PC ladder offers, so the only neighbour is one step up at Dia 6 - a marginal bore gain for slightly stiffer tubing, useful if you want a little more rigidity on a long run. On the thread side you can drop to 1/8in PT (also available in Dia 4), but you cannot step this tube size up to 3/8in: on the PC series the 3/8in and 1/2in threads start at Dia 6. Match the tube OD exactly - a Dia 4 fitting will not seal on 5/32in or 6 mm tube, and forcing a near-size in is the classic slow-leak cause.
Choose this shape over a PL elbow when the port axis can point straight at the tube run; if you need to turn 90 degrees at the port, the PL402D-S or PLL402D-S in the same stainless family is the better pick.
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-S 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 connects Dia 4 mm soft nylon or polyurethane tube to a 1/4in PT male thread. The body is stainless steel 304 and copper-free; the chuck and release button are POM, the guide is aluminium alloy, and the O-ring is NBR. These figures match the standard PC401D exactly - the -S changes material, not ratings.
Read the code left to right: PC is the male connector prefix, 4 is the Dia 4 mm tube size, 02 (shown as D-S in shorthand ordering) is the 1/4in thread, D is the black release-button colour option, and -S marks the SUS304 variant. On the PC series the D suffix affects only the release button, not the body - and here the body is stainless 304 regardless, so the colour choice is purely about visibility at the connection point.
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