Stainless Steel Female BSPT to Hose Barb Connector — 1/4" 3/8" 1/2" 3/4" Tapered Thread

Match the barb diameter to your hose inner diameter (ID). For example, a hose with a 10mm (approx. 3/8") inner bore needs a 10mm barb. When in doubt, measure the inside of your hose with calipers before ordering. A barb that is slightly larger than the hose ID will create a tighter, more secure grip.

BSPT sizes refer to the nominal bore, not the actual thread OD. A 1/2" BSPT female port typically has an actual thread outer diameter of about 20.9mm on the male side. Check the markings on your pump, valve, or tank port, or measure the male fitting it will thread onto. In most cases, the port will be labeled 1/4", 3/8", 1/2", or 3/4" BSPT.

Stainless steel BSPT hose barb fittings generally handle working pressures in the range of 150–300 PSI, depending on the specific size and wall thickness. For high-pressure or safety-critical applications, contact us to confirm the rated working pressure for your chosen variant before installation.

Yes. The stainless steel body provides strong resistance to rust and corrosion, making these fittings suitable for outdoor irrigation systems, marine plumbing, and humid industrial environments. For prolonged saltwater or highly corrosive exposure, 316 stainless is generally preferred over 304 — contact us to confirm the alloy grade for your application.

No — BSPT is a tapered thread and is not directly interchangeable with NPT or parallel BSPP threads. BSPT uses a 55-degree thread angle while NPT uses 60 degrees, and the taper and pitch differ from parallel BSPP. Forcing one into the other can cause cross-threading or leaks. If your system uses NPT or BSPP ports, please verify compatibility or contact us before ordering.

Yes. This fitting has a tapered BSPT thread, which seals by wedging tighter as it's screwed in. PTFE tape or a liquid thread sealant is generally required on the male thread to achieve a leak-free seal — no separate flat washer or O-ring is used, unlike parallel BSPP fittings.

These fittings are generally compatible with water, air, mild chemicals, oils, and fuels. They are not recommended for strong acids, chlorinated solvents, or highly aggressive chemicals without first confirming the specific alloy grade. Contact us with your fluid type if you have compatibility questions.

Push the hose firmly over the barb until it seats past the first rib. For any pressurized application, secure the hose with a stainless steel hose clamp positioned just behind the barb end. The ribbed barb profile grips the hose inner wall to resist pull-out, but a clamp adds an extra layer of security under pressure or vibration.