HARFINGTON 3/4" NPT to 3/8" Barbed Hose Fitting

Spec sheet

The 3/4" male NPT thread and 3/8" hose ID barb define the connection this HARFINGTON fitting is made for. It brings a threaded port and a compatible hose together in one compact connector.

• Type: Barbed fitting
• Thread: 3/4" male NPT
• Hose compatibility: 3/8" hose ID
• Total length: 1.77 inches
• Barbed length: 0.91 inch
• Maximum barb outside diameter: 0.39 inch
• Weight: 59 g
• Quantity: 1 fitting

The dimensions help when planning a replacement or laying out a new line: match the threaded end to the port and the barb to the hose’s inside diameter. The ridged barb is designed to hold the hose connection securely, while the male NPT end threads into the corresponding port.

Best use cases

Use this fitting where a 3/8" ID hose needs to connect to a 3/4" NPT female port. It suits plumbing projects around the home or garden, as well as irrigation systems, air compressors and fuel-line applications. Its straightforward threaded-to-barbed format can make it a practical choice for extending a line or replacing a connector without changing the hose size.

For a home-brewing setup, the same connection style can be useful when the installation calls for a 3/4" NPT male thread and 3/8" hose ID. Is that the combination your layout requires? Matching both ends to the existing port and hose is the key to choosing the right fitting. The compact 1.77-inch overall length also gives a clear reference when arranging a connection in a confined space.

Compared with a connector that uses threaded connections at both ends, a barbed fitting is suited to a layout where one side is a hose. It provides a direct transition from the threaded port to the hose, keeping the connection format simple for common plumbing and fluid-line projects.

In the box

One barbed fitting is included. The single-piece quantity is useful when you need a specific connector for a repair or a planned connection, rather than a multi-piece set.

For installation, use a hose with a 3/8" inside diameter and a port that matches the 3/4" male NPT thread. Seat the hose over the barb and make the threaded connection at the port as appropriate for your setup. This keeps the fitting’s two ends matched to the parts they are intended to join.

Buying verdict

Choose the HARFINGTON fitting for a project that calls for a 3/4" male NPT connection on one side and a 3/8" ID hose on the other. Its barbed design is suited to hose-based plumbing, irrigation and other listed line applications, while its defined dimensions make it easier to plan around the available space. It is a useful single connector for making that specific threaded-to-hose transition.