Airtac PC Threaded Straight Connector PC4M5-S
SUS304 stainless variant (-S)The AirTAC Airtac PC Threaded Straight Connector PC4M5-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 PC4M5-S
The PC4M5-S is AirTAC's PC series one-touch male connector in its smallest standard format: it lands a Dia 4 mm soft nylon or polyurethane tube straight onto an M5x0.8 male thread. Because this SKU carries the -S suffix, the fitting body itself is machined from Stainless steel 304 rather than brass, and the construction is fully copper-free - a meaningful distinction on the PC and POC straight connectors, since only these two families get a solid stainless body when ordered with -S, while stainless elbows receive a stainless stud on a PBT body instead.
One-touch action is simple: push the Dia 4 tube into the chuck until it bottoms, and the stainless spring gasket plus POM chuck grip it for a seal that holds 0-1.0 MPa of pressure and -750 mmHg of vacuum; press the release ring and the tube frees. A lesser-known detail on this size is that the M5x0.8 thread seals with a captive sealing gasket rather than the pre-applied thread sealant used on the 1/8 inch and larger tapered threads, so it seats against a flat machined port face. The NBR O-ring, aluminium-alloy guide and POM release button stay as on the standard part, and the ratings are unchanged by the -S option: 1.5 MPa proof pressure and a working band of -20 to +70 C.
Airtac PC Threaded Straight Connector PC4M5-S Technical Specifications
| Model | Airtac PC Threaded Straight Connector PC4M5-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 PC4M5-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 PC4M5-S Is Used
Copper-free lab gas distribution
On analytical instruments and semiconductor test benches where trace copper catalyses sample reactions, the SUS304 copper-free body keeps Dia 4 mm carrier-gas lines chemically clean on M5 manifold ports.
PCB handling pick-and-place
SMT vacuum ejectors and small gripper cylinders typically spec M5 ports; this connector feeds their Dia 4 mm vacuum lines directly without adapters at the end-effector.
Wash-down sensor air purge
Food and packaging machinery with frequent caustic hose-down benefits from the stainless body on Dia 4 mm purge lines feeding M5-ported photoelectric and pressure sensors.
Is the Airtac PC Threaded Straight Connector PC4M5-S the Right Part?
Dia 4 sits at the bottom of the PC M5 ladder - the only tube sizes made on an M5 thread are Dia 4 and Dia 6 - so PC6M5-S is the single step up, and it buys you a fatter bore for short sensor legs or small vacuum cups at the cost of a larger port seating. If your port is a tapered 1/8 inch thread instead of M5, the same Dia 4 tube is served by PC401-S in grey or PC401SD-S in black.
Measure the tube before ordering: the chuck is machined for a 4 mm outside diameter and will not reliably grip 5/32 inch (4 mm nominal imperial) tube or anything nominally close - metric OD must match to the tenth of a millimetre. Note too that on PC and POC the D colour suffix only changes the release button, not the body, so colour is not a selection driver on this particular SKU.
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 PC4M5-S FAQ
It is a SUS304 stainless one-touch male connector joining a Dia 4 mm tube to an M5x0.8 thread (gasket-sealed). Working pressure is 0-1.0 MPa (0-10 kgf/cm2), negative pressure to -750 mmHg (10 Torr), proof pressure 1.5 MPa, and operating temperature -20 to +70 C. Applicable tubing is soft nylon or polyurethane. The -S variant does not change any of these ratings - the same figures apply to the brass PC4M5.
No. AirTAC publishes one rating set for the PC series and the -S option leaves it untouched: 0-1.0 MPa working, 1.5 MPa proof, -20 to +70 C. What changes is corrosion behaviour and material purity - the body becomes solid Stainless steel 304 and the whole fitting is copper-free, which matters in wash-down zones and wherever copper contamination is unacceptable. No surface finish, passivation or certification figures beyond the 304 grade are published, and no alternate grades such as 316 exist in this catalogue.
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