Airtac PC Threaded Straight Connector PC804D-S
SUS304 stainless variant (-S)The AirTAC Airtac PC Threaded Straight Connector PC804D-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 PC804D-S
The PC804D-S is the SUS304 stainless version of the AirTAC PC male connector, joining a Dia 8 mm soft nylon or polyurethane tube to a 1/2 inch PT male thread. Push the tube into the chuck and the stainless spring gasket and collet grip it for a pressure-tight seal; press the black POM release button and the ring frees the tube again. No tools, no clamps, no re-tightening.
In this -S build the connector body itself is Stainless steel 304, and AirTAC states that all parts of the PC and POC stainless connectors are copper-free. The release button and chuck remain POM, the guide is aluminium alloy, the spring gasket is stainless and the O-ring is NBR. Ratings are unchanged from the standard resin line: 0-1.0 MPa working, 1.5 MPa proof, -20 to +70 C, and -750 mmHg vacuum is also handled. Note that the D suffix only selects the black release button here - the body is stainless regardless.
Airtac PC Threaded Straight Connector PC804D-S Technical Specifications
| Model | Airtac PC Threaded Straight Connector PC804D-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 PC804D-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 PC804D-S Is Used
Electroplating transfer arm
Air feed to the lift cylinder on a plating-line transfer arm, where acidic mist attacks brass and the copper-free SUS304 body avoids contaminating the bath chemistry.
Marine hatch actuation
Deck-level hatch or gangway cylinders on workboats, where salt fog rapidly pits plated brass bodies but a 304 stainless connector survives with only routine rinsing.
PCB handling machine
Cylinder ports on PCB conveyor stoppers and clamps in electronics plants, where copper-free pneumatic hardware is specified to prevent copper particle carryover onto boards.
Is the Airtac PC Threaded Straight Connector PC804D-S the Right Part?
On the PC 1/2 inch thread ladder this Dia 8 sits between Dia 6 below and Dia 10 above (Dia 12 also exists). Stepping down to 6 mm suits lighter cylinder loads and shorter runs; stepping up to 10 mm buys you a bigger bore for longer lines or higher-demand actuators, at the cost of a larger fitting footprint on the port. The tube OD must match exactly - a Dia 8 one-touch chuck will not seal on 1/4 inch (6.35 mm) or 3/8 inch imperial tube.
A 1/2 inch PT thread is the right call when the port is already cut that size, typically on larger cylinders and valve manifolds; do not adapt a smaller thread up with bushings where you can order the correct PC size directly. If the pipe needs to turn, choose a PL or PH elbow instead of forcing hose around a 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 PC804D-S FAQ
It is a SUS304 stainless one-touch male connector for Dia 8 mm soft nylon or polyurethane tube with a 1/2 inch PT male thread. 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. The stainless build changes the body material only - all pressure and temperature figures match the standard PC804.
The body is SUS304 and AirTAC states all parts are copper-free; the release button and chuck stay POM and the O-ring stays NBR, so it is not a solid stainless part. The 1/2 inch thread on the PC series accepts Dia 6, 8, 10 or 12 mm tube, but each individual fitting holds exactly one tube size - this one grips 8 mm only. Do not substitute 1/4 inch imperial tube.
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