AHFMANG 5-Piece Brass Hose Barb Fitting, 3/8" Barb x 1/8" NPT Male

For connecting plastic or rubber hose to a threaded fitting, this AHFMANG adapter combines a 3/8" hose barb with a 1/8" male NPT thread. Its two connection styles make it useful when a line needs to transition between hose and a threaded connection, rather than using separate fittings for each side.

Made from brass, the adapter is suited to common line connections for air, water, fuel, oil and inert gases. The set contains five fittings, giving you multiple adapters for a project or spares for similar connection work.

Pros

The barb end is designed for plastic or rubber hose, while the opposite end provides a male NPT threaded connection. This lets one compact adapter join hose to compatible threaded fittings in a single transition. Its brass construction and clearly stated connection sizes make it easier to select for a particular line: 3/8" barb on the hose side and 1/8" NPT male on the threaded side.

The five-piece set is practical when more than one connection needs the same configuration. Compared with sourcing a barb fitting and a separate threaded adapter, this combined fitting brings both connection types together. It is intended for use in lines carrying air, water, fuel, oil or inert gases.

Key takeaways

Each fitting has one 3/8" barb end and one 1/8" male NPT threaded end. The material is brass, and the set contains five adapters. The barb side is suitable for plastic or rubber hose, the threaded side is intended for an NPT connection. These details help match the fitting to the hose and threaded port in your setup before assembly.

For example, when setting up a line that uses flexible hose on one side and a threaded fitting on the other, this adapter provides the transition in one part. The same configuration can be used for the listed air, water, fuel, oil and inert-gas line applications. Match the hose to the 3/8" barb and the receiving connection to the 1/8" NPT male thread.

Usage tips

Identify both connection points before choosing the fitting: the hose needs to suit the 3/8" barb, and the threaded side needs a compatible 1/8" NPT connection. This simple check helps confirm that the adapter bridges the two parts of your line as intended. The fitting’s combined barb-and-thread format is especially useful when a project calls for a direct hose-to-thread transition rather than a separate, multi-piece arrangement.

Before you decide

What connections does each adapter have? Each one has a 3/8" hose barb on one side and a 1/8" male NPT thread on the other, for joining hose to a compatible threaded fitting.

Can it be used with plastic or rubber hose? Yes. The barb end is specified for use with either plastic or rubber hose. Choose a hose that matches the 3/8" barb size.

What kinds of lines is it intended for? The adapter is commonly used to connect lines for air, water, fuel, oil and inert gases. The five-piece set suits projects that call for several adapters with this same connection size.

Buying verdict

This AHFMANG set suits line-connection projects that need a straightforward transition from 3/8" plastic or rubber hose to a 1/8" NPT male thread. Brass construction, five matching fittings and a configuration intended for several common line applications make it a practical choice when you need multiple adapters of the same type.