Stainless Steel 304 Push-In Straight Fitting — PT Male Thread x Hose Barb Adapter (4mm–16mm OD)

Measure your hose outer diameter (OD) with calipers — common sizes are 4mm (≈5/32"), 6mm (≈1/4"), 8mm (≈5/16"), 10mm (≈3/8"), 12mm (≈1/2"), and 16mm (≈5/8"). Then check the thread on your port: M5 is a metric thread, while PT 1/8", PT 1/4", PT 3/8", PT 1/2", and PT 3/4" are BSPT taper threads. Match both dimensions to the variant you select above.

Stainless Steel 304 push-in fittings of this type are generally rated for working pressures up to approximately 150 PSI (≈10 bar) depending on hose size and fluid type. Smaller OD sizes typically handle higher pressures than larger ODs. Always verify the rating against your system's operating pressure before installation.

Yes. Stainless Steel 304 offers good resistance to moisture, mild chemicals, and atmospheric corrosion, making these fittings suitable for outdoor, marine-adjacent, and food-processing environments in most cases. For highly chlorinated or saltwater-immersion applications, SS316 is typically recommended instead.

No — PT (BSPT) and NPT are both tapered thread standards but they are not interchangeable. PT threads follow the British Standard Pipe Taper (55° thread angle), while NPT uses a 60° angle. Mixing the two can result in cross-threading or leaks. Check your equipment's port markings or documentation to confirm the standard before ordering.

The push-in end is tool-free — simply insert the hose until it clicks and seats against the internal collet. For the PT male thread end, hand-tighten into the port and apply PTFE tape or thread sealant to the tapered threads to ensure a leak-free seal. A wrench may be used to snug the thread, but avoid overtightening stainless into aluminum ports.

These fittings are generally compatible with semi-rigid polyurethane (PU), nylon (PA), and polyethylene (PE) tubing that matches the listed OD. Soft silicone or braided hose typically requires a different fitting style (such as a barb with clamp). Always confirm the tubing OD tolerance is within ±0.1mm for a reliable collet grip.

Multi-packs offer a lower per-unit cost and ensure you have spares on hand for maintenance or future builds. The 5-pack is particularly cost-effective for workshop setups, pneumatic panel builds, or any project requiring multiple connection points of the same size. Single pieces are ideal for one-off repairs where you only need to replace a specific fitting.