Brass Female Hose Barb Fittings – 90° Elbow & Straight Adapter, 1/4" to 1" NPT × 6–32mm

Match the barb diameter to your hose's inner diameter (ID). For example, a 10mm barb fits a hose with a 10mm ID. When in doubt, measure your hose ID with calipers. Common conversions: 6mm ≈ 1/4" ID, 8mm ≈ 5/16" ID, 10mm ≈ 3/8" ID, 12mm ≈ 1/2" ID, 16mm ≈ 5/8" ID, 19mm ≈ 3/4" ID.

These fittings use NPT (National Pipe Taper) female threads, which is the standard for most US fuel, air, and fluid systems. Always verify your mating component uses NPT before ordering. BSPT or metric threads are not compatible without an adapter.

Brass is generally compatible with gasoline, diesel, and many petroleum-based fuels. However, compatibility depends on the specific fuel formulation, additives (such as ethanol blends), and operating pressure. Always verify suitability for your application and use appropriate thread sealant. For high-ethanol fuels, confirm brass compatibility with your fuel supplier.

Brass offers good corrosion resistance compared to steel, making it generally suitable for outdoor and humid environments. For prolonged saltwater exposure or highly corrosive conditions, additional protection or stainless steel alternatives may be preferable. In most standard outdoor DIY and automotive applications, brass typically performs well.

Pressure ratings vary by size and application. Brass hose barb fittings in these size ranges are generally suited for low-to-medium pressure applications. For high-pressure systems, contact us to confirm the rating for your specific size before use.

Choose a 90° elbow when your hose needs to change direction at a right angle — ideal for tight engine bays, panel-mounted ports, or anywhere a straight run would cause the hose to kink. Use a straight fitting when the hose runs in line with the threaded port for a cleaner, lower-profile connection with less flow restriction.

Yes. NPT tapered threads generally require PTFE thread tape or a compatible thread sealant to achieve a leak-free seal. Apply 2–3 wraps of PTFE tape in the direction of the thread before installation. Do not overtighten — brass threads can crack if over-torqued.

Push the hose firmly over the barb until it seats past the ribbed retaining rings. For a more secure connection — especially in fuel or pressurized applications — use a hose clamp positioned over the barb area. This is generally recommended for any application where vibration or pressure could cause the hose to back off.