Airtac PC Threaded Straight Connector PC803-S
SUS304 stainless variant (-S)The AirTAC Airtac PC Threaded Straight Connector PC803-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 PC803-S
The PC803-S is AirTAC's PC male connector in the SUS304 stainless-steel variant: a one-touch push-in fitting that terminates a Dia 8 mm soft nylon or polyurethane tube into a 3/8 in PT female port. On the PC and POC straight connectors the -S suffix upgrades the entire body itself to Stainless steel 304, and AirTAC states that all parts of the assembly are copper-free - a step beyond the standard PC, whose brass body is merely complemented by PBT threaded sections.
Connection takes one push: the tube slides past the POM release button into the chuck, which grips it against the stainless spring gasket and NBR O-ring for a seal under both pressure and vacuum. The release ring frees the tube again when you need to rework a line. Every rating carries over unchanged from the standard part: 0-1.0 MPa working pressure, -750 mmHg vacuum, 1.5 MPa proof pressure and -20 to +70 C. The 3/8 in thread arrives with sealant applied, ready to thread into the port.
Airtac PC Threaded Straight Connector PC803-S Technical Specifications
| Model | Airtac PC Threaded Straight Connector PC803-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 PC803-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 PC803-S Is Used
Plating and anodising rinse headers
Copper-free pneumatic drops above acid rinse tanks, where a brass fitting slowly leaches copper into the bath and fouls the chemistry. The SUS304 body shrugs off the splash zone.
SMT reflow nitrogen lines
Feeding nitrogen to reflow ovens and AOI stations in electronics assembly, where copper particles downstream of the fitting are an yield risk on bare boards.
Coastal instrument air take-offs
Salt-laden air attacks brass fittings on quay-side and offshore control panels within months; the stainless body and POM release button keep the 8 mm push-in connection serviceable.
Is the Airtac PC Threaded Straight Connector PC803-S the Right Part?
On the PC 3/8 in ladder this sits between PC603 (Dia 6 tube) below and PC1003 (Dia 10) above. Stepping down to 6 mm trims the bore for lighter-duty actuators but adds flow restriction per metre; stepping up to 10 mm suits longer runs and larger-bore cylinders at the same port size. The thread can also move independently: PC802 drops this same 8 mm tube onto a 1/4 in port, PC804 raises it to 1/2 in. Tube OD must match exactly - a Dia 8 chuck will not seal on 1/4 in (6.35 mm) tube.
Choose the -S version when the standard brass-and-PBT PC803 would corrode or contaminate: the all-stainless, copper-free body is the point of this SKU, not a cosmetic option. Dimensions are identical to the standard PC803, so it is a direct swap.
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 PC803-S FAQ
It is a SUS304 one-touch male connector for Dia 8 mm soft nylon or polyurethane tube with a 3/8 in 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. The body is stainless steel 304 with POM release button and chuck, aluminium-alloy guide, stainless spring gasket and NBR O-ring, and the whole assembly is copper-free. Ratings are identical to the standard PC803.
No. The dimension tables for PC803-S match the standard PC803 exactly, and the tube and thread ladders are unchanged, so it swaps in without redrawing the panel. One caution for specifiers: the grade is 304 only - AirTAC publishes no 316 option - and no surface finish, passivation or food-safety certification figures exist for this line, so do not assume them.
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