Airtac PC Threaded Straight Connector PC604-S
SUS304 stainless variant (-S)The AirTAC Airtac PC Threaded Straight Connector PC604-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 PC604-S
The PC604-S is the SUS304 stainless-body version of the AirTAC PC one-touch male connector, a straight fitting that joins Dia 6 mm soft nylon or polyurethane tubing to a 1/2in PT male thread. Push the tube into the chuck and the stainless spring gasket and POM grip ring hold it against pressure; press the release ring and the tube slides straight back out, so rework and re-routing take seconds with no tools on the tube side.
On PC and POC straight connectors the -S suffix changes the fitting body itself to Stainless steel 304, and AirTAC states the part is copper-free - a meaningful point in electronics assembly, plating shops and food plants where dissolved copper affects the process. The release button and chuck remain POM, the guide stays aluminium alloy, and the O-ring is NBR. Ratings are identical to the standard grey part: 0-1.0 MPa working pressure, -750 mmHg vacuum, 1.5 MPa proof pressure and -20 to +70 C. No figures change because the body is stainless.
Airtac PC Threaded Straight Connector PC604-S Technical Specifications
| Model | Airtac PC Threaded Straight Connector PC604-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 PC604-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 PC604-S Is Used
Food-line wash-down drop
A stainless 1/2in-port manifold on a packaging conveyor drops air to a Dia 6 rotary actuator; the SUS304 body and copper-free construction survive caustic hose-down where brass plating would pit.
Plating-line instrument air
Air agitation and rinse-actuation lines above plating tanks use small-bore Dia 6 tubing, and copper in the airstream is unacceptable near the bath - the PC604-S thread studs straight into the 1/2in tank-side header.
Semiconductor tool nitrogen purge
A copper-free rule inside the tool means the Dia 6 purge lines landing on 1/2in bulkhead ports take this connector; the release ring lets service teams swap purge legs without decontaminating a soldered joint.
Is the Airtac PC Threaded Straight Connector PC604-S the Right Part?
On the PC ladder with a 1/2in thread, Dia 6 is the smallest tube AirTAC offers - the range runs 6, 8, 10 and 12 mm, so there is no Dia 4 step below this SKU. Stepping up to PC804 doubles the bore area for shorter pressure drop on the same 1/2in port; if the port is actually 3/8in, PC603 covers the same Dia 6 tube one thread size down. Keep in mind that a 1/2in port fed by a 6 mm line only makes sense where the panel thread is fixed and the flow demand is modest - otherwise move both sizes up together.
Tube OD must match exactly: the Dia 6 chuck will not seal 1/4in or 5/16in imperial tube, and forcing it wrecks the gasket. If the run needs to turn 90 degrees at the port, the stainless-stud PLPL... more precisely the PL stainless-stud elbow range is the shape change to reach for, not this straight connector.
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 PC604-S FAQ
It is a stainless-body PC one-touch male connector for Dia 6 mm tube with a 1/2in PT male thread. Working pressure 0-1.0 MPa (0-10 kgf/cm2), vacuum to -750 mmHg (10 Torr), proof pressure 1.5 MPa, operating temperature -20 to +70 C, tubing soft nylon or polyurethane. The body is SUS304 and copper-free; these ratings are the same as the standard PC604.
No. High temperature is the job of the metal BPC family, which is rated to 150 C but only 0.9 MPa. The PC604-S keeps the resin-line rating of -20 to +70 C, and above roughly 70 C the polyurethane or nylon tube itself becomes the limit anyway. Choose this part for corrosion resistance and copper-free construction, not for heat.
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