Stainless Steel Push-in Pneumatic Hose Fittings | Straight Male Thread Connectors 4–16mm OD

Measure your hose outer diameter (OD) in millimeters — common sizes are 4mm, 6mm, 8mm, 10mm, 12mm, and 16mm. Then match the male thread to your valve, manifold, or cylinder port: M5 is typically used on miniature cylinders; PT 1/8" on small solenoid valves; PT 1/4" on standard pneumatic components; PT 3/8" or PT 1/2" on higher-flow applications. When in doubt, use a thread gauge or check your equipment's port spec sheet.

PT (Pipe Taper) follows JIS B 0203 and is dimensionally similar to BSPT — generally cross-compatible with BSPT ports. PT threads are not compatible with NPT (American National Pipe Taper): the thread angle differs (55° vs 60°). If your equipment uses NPT ports, use an appropriate adapter or select NPT fittings instead.

Stainless steel push-in pneumatic fittings of this type are generally rated for working pressures up to approximately 150 PSI (≈1.0 MPa) in standard compressed air systems. Actual ratings depend on tubing material, wall thickness, and installation conditions. Always verify against your system's pressure requirements.

Yes. The stainless steel body provides significantly better corrosion resistance than brass or zinc-alloy fittings, making these suitable for outdoor pneumatic systems, humid workshops, food-adjacent environments, and light marine applications. For highly aggressive chemical exposure, confirm material compatibility with your specific media before use.

The push-in end is tool-free — insert the hose until it clicks and seats against the internal collet. For the male thread end, hand-tighten first, then snug with a wrench. Applying PTFE thread tape (2–3 wraps) to the male thread is recommended for an airtight seal, especially on tapered PT threads.

These fittings are generally compatible with semi-rigid pneumatic tubing including polyurethane (PU), nylon (PA), and polyethylene (PE) with the matching outer diameter. Soft silicone or braided hose is typically not suitable for push-in collet fittings. Always use tubing with a consistent, round OD for a reliable seal.

First, depressurize the line completely. Then press the collet release ring (the outer ring at the fitting mouth) inward while simultaneously pulling the hose straight out. Avoid twisting or pulling at an angle, as this can damage the collet teeth and compromise the seal.