Airtac PC Threaded Straight Connector PC402D-S
SUS304 stainless variant (-S)The AirTAC Airtac PC Threaded Straight Connector PC402D-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 PC402D-S
The PC402D-S is the stainless-steel version of the AirTAC PC male connector, a one-touch straight fitting that joins 4 mm outside-diameter soft nylon or polyurethane tube to a 1/4in PT male thread. Push the tube into the chuck and the internal grip rings hold it against pressure; press the POM release ring and the tube slides free for rework. Because this SKU carries the -S suffix, the body itself is machined from Stainless steel 304 and AirTAC states that all parts of the PC/POC stainless straight connectors are copper-free.
Ratings are identical to the standard resin line, not re-rated for stainless: 0 to 1.0 MPa working pressure, 1.5 MPa proof pressure, vacuum down to -750 mmHg, and -20 to +70 C. The release button and chuck stay POM (grey on standard parts, black here - on the PC series the D suffix changes only the button colour, not the body), with an aluminium-alloy guide, stainless spring gasket and NBR O-ring completing the seal stack.
Airtac PC Threaded Straight Connector PC402D-S Technical Specifications
| Model | Airtac PC Threaded Straight Connector PC402D-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 PC402D-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 PC402D-S Is Used
Plating and wet-process pilot lines
Copper-free SUS304 construction keeps dissolved copper out of the air supply to pH dosing cylinders and rinse-station actuators around electroplating tanks, where a brass body could catalyse chemistry or contaminate baths.
Food-plant wash-down signal runs
A 1/4in PT stud on a stainless body shrugs off caustic foam and hose-down around filling and tray-sealing machines, feeding 4 mm tube to pilot valves that standard grey fittings would foul first.
Valve-manifold take-offs in electronics plants
Screw the 1/4in thread straight into the spare port of a solenoid manifold on a pick-and-place or tape-and-reel station and run 4 mm tube to a small gripper cylinder without adding an adapter.
Is the Airtac PC Threaded Straight Connector PC402D-S the Right Part?
Dia 4 is the smallest tube size the PC series offers in a 1/4in thread, so there is no smaller tube sibling in this exact combination - the next tube up is Dia 6 (PC602) for higher feed to the same port, and Dia 8 (PC802) beyond that. If your port is 1/8in instead, the same 4 mm tube is available as PC401; it also exists on M5 as PC4M5. Stepping the thread up while keeping Dia 4 buys a stronger stud but no extra flow - capacity is governed by the 4 mm bore, so move to Dia 6 if the circuit is starved. The tube OD must match exactly: a Dia 4 chuck will not seal on 1/8in imperial tube (3.2 mm) or on any other size, and a mismatch is the leading cause of leak complaints on push-fit joints.
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-S FAQ
Working pressure 0 to 1.0 MPa (0 to 10 kgf/cm2), proof pressure 1.5 MPa, vacuum to -750 mmHg, operating temperature -20 to +70 C. It accepts 4 mm outside-diameter soft nylon or polyurethane tube and has a 1/4in PT male thread, with the fitting body in Stainless steel 304.
No. On the PC series the D suffix changes only the release button colour to black; the body remains the SUS304 stainless of every -S straight connector. If you need the body itself in black, that is a finish on the standard brass-body PC line, not this stainless part.
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