Airtac POC Round Thread Straight Connector POC803D-S
SUS304 stainless variant (-S)The AirTAC Airtac POC Round Thread Straight Connector POC803D-S is a genuine male connector (compact) for push-in tube connection, rated 0 - 1.0 MPa (0 - 10 kgf/cm2) with a 1.5 MPa proof pressure.
- TypeMale connector (compact)
- SeriesPOC
- 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 POC Round Thread Straight Connector POC803D-S
The POC803D-S is AirTAC's compact one-touch male connector in the SUS304 stainless variant, joining Dia 8 mm soft nylon or polyurethane tubing to a 3/8in PT male thread. Push the tube home and the internal chuck grips it against the spring gasket; press the black release button and the ring frees the tube for removal. The compact POC body is shorter than the standard PC connector, so it clears tight ports where a full-length connector would foul guards or manifold walls.
This -S version differs from the standard POC803D in one important way: the connector body itself is made from Stainless steel 304 rather than brass, and AirTAC states all parts of the assembly 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 identical to the resin-line standard: 0-1.0 MPa working pressure, -750 mmHg vacuum, 1.5 MPa proof pressure and -20 to +70 C. Threaded ports arrive with sealant pre-applied.
Airtac POC Round Thread Straight Connector POC803D-S Technical Specifications
| Model | Airtac POC Round Thread Straight Connector POC803D-S |
|---|---|
| Type | Male connector (compact) |
| Series | POC |
| 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 POC Round Thread Straight Connector POC803D-S
| POC | Male connector (compact). |
|---|---|
| 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 POC Round Thread Straight Connector POC803D-S Is Used
Electroplating and plating-line controls
Copper-free stainless construction suits pneumatic runs on plating tanks and rinse stations, where brass fittings can leach copper into process chemistry and contaminate the bath.
Pick-and-place head on a compact gripper
The shortened POC body clears the close quarters above a parallel gripper or vacuum ejector on a pick-and-place head, feeding it from a 3/8in manifold port with 8 mm tubing.
Wash-down sensor and jet piping on food machinery
On filling and packaging machines that are hosed down between batches, the SUS304 body resists the corrosion that pits plated brass connectors, with 8 mm tube running to air jets and sensor actuation.
Is the Airtac POC Round Thread Straight Connector POC803D-S the Right Part?
On a 3/8in PT thread, Dia 8 is the smallest tube size AirTAC makes for the POC series - the ladder on this thread runs Dia 8, 10 and 12 only. Stepping up gives POC1003-S or POC1203-S with more bore for higher delivery to the same port; there is no Dia 6 option below this one at 3/8in. If you need Dia 8 tube on a smaller port, drop to the 1/4in thread (POC802-S) or the 1/8in thread (POC801-S), both of which carry Dia 8 in the POC table. Tube OD must match exactly: a Dia 8 chuck will not seal on 5/16in or 10 mm tube. If a 3/8in elbow or a thread-side swivel is what the layout needs, look at PLF or PHF instead - this connector is straight only.
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 POC Round Thread Straight Connector POC803D-S FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), negative pressure -750 mmHg (10 Torr), proof pressure 1.5 MPa, operating temperature -20 to +70 C. This SKU joins Dia 8 mm soft nylon or polyurethane tube to a 3/8in PT male thread. The body is SUS304 stainless steel and the assembly is copper-free; ratings are exactly the same as the standard POC803D.
Only the material and the corrosion behaviour: the connector body is Stainless steel 304 instead of brass, and the whole part is copper-free. Pressure, vacuum, proof-pressure and temperature ratings are unchanged, and the external dimensions match the standard version, so it drops straight into the same envelope. AirTAC publishes no surface-finish or certification figures for the stainless line, so those should not be assumed.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard parts are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC One-Touch Fittings
Request a Quote for Airtac POC Round Thread Straight Connector POC803D-S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.