Airtac POC Round Thread Straight Connector POC4M5D-S
SUS304 stainless variant (-S)The AirTAC Airtac POC Round Thread Straight Connector POC4M5D-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 POC4M5D-S
The AirTAC POC4M5D-S is the compact one-touch male connector from the stainless line: a SUS304 body with an M5x0.8 male thread on one side and a push-in socket for Dia 4 mm soft nylon or polyurethane tubing on the other. Push the tube home and the internal chuck grips it; press the release ring and the tube frees again. The M5 thread is small enough to screw straight into the tapped ports of compact actuators and sensor blocks, and on M5 sizes AirTAC seals the joint with a gasket rather than loose sealant on the thread.
Because this SKU carries the -S suffix, the connector body itself is stainless steel 304 and every wetted part is copper-free, which is why buyers specify it where copper particles or copper-catalysed reactions cannot be tolerated, such as plating lines and electronics production. The release button and chuck remain POM (in black on this D-suffix part), with an aluminium-alloy guide, stainless spring gasket and NBR O-ring. Ratings are identical to the standard catalogue: 0-1.0 MPa working, 1.5 MPa proof, -20 to +70 C.
Airtac POC Round Thread Straight Connector POC4M5D-S Technical Specifications
| Model | Airtac POC Round Thread Straight Connector POC4M5D-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 POC4M5D-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 POC4M5D-S Is Used
Compact pick-and-place head
Feeding air to a gripper or blow-off nozzle on a SCARA robot end-effector, where the tapped M5 port on a small actuator block rules out a full-size connector and the Dia 4 hose routes through cramped wrist cabling.
Plating line sensor air feed
Carrying actuation air to level and conductivity sensors over electroplating tanks, where the copper-free SUS304 body prevents copper traces entering bath chemistry or plating solutions.
Electronics test fixture air drop
A point-of-use air connection on a PCB test fixture, where the compact body clears probe towers and the copper-free wetted path protects sensitive component-handling processes from contamination.
Is the Airtac POC Round Thread Straight Connector POC4M5D-S the Right Part?
Dia 4 is the smallest tube size AirTAC offers in the POC M5 ladder, so there is no step down; the single step up is POC6M5-S for 6 mm tube, which gives a stiffer line and a qualitatively larger flow path through the same M5 port. If your port is tapped 1/8 in PT instead of M5, the matching part in the same stainless body is POC401-S. Whichever you choose, the tube OD must match the socket exactly - a Dia 4 fitting will not hold 1/4 in (6.35 mm) tube, and the smallest universal or reducer shapes do not reach M5, so plan the port around this thread.
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 POC4M5D-S FAQ
Working pressure 0-1.0 MPa (0-10 kgf/cm2), vacuum down to -750 mmHg (10 Torr), proof pressure 1.5 MPa, and a temperature range of -20 to +70 C. This SKU joins Dia 4 mm tube to an M5x0.8 male thread. The stainless -S variant uses exactly these same figures as the standard POC line - going stainless does not change any rating.
On the POC series the D suffix changes only the release button, which becomes black. The SUS304 body, POM chuck, stainless spring gasket, NBR O-ring and every dimension are identical to the grey POC4M5-S. On many other AirTAC series the D suffix changes the whole body, but on the PC and POC straight connectors it is the button alone.
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Covers non-human-caused product damage.
Fast Dispatch
Standard parts are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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