Metric Male to Barb Adapters

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£6.84

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Barb to Metric Male Adapters – Flexible Hose to Metric Connections

Connect flexible hose directly to compatible metric ports with our aluminium Barb to Metric Male Adapters. Featuring a multi-barb hose tail and male metric connection with an O-ring sealing face, these compact adapters provide a simple transition between conventional flexible hose and compatible metric fluid-system components.

Why Choose Our Barb to Metric Male Adapters?

Multi-Barb Hose Connection

The formed hose tail provides multiple retaining barbs to grip the inside of compatible flexible hose and help resist pull-off once correctly secured.
Male Metric Connection

Available with M10, M12 and M18 male metric threads for connection to compatible female metric ports.
O-Ring Sealing

The metric connection uses an O-ring against the mating sealing face, rather than relying on the threads themselves to create the fluid seal.
6061-T6 Aluminium Construction

CNC-machined from lightweight 6061-T6 aluminium and finished in black anodising for durability and corrosion resistance.
Simple Hose Installation

The hose pushes directly over the correctly sized barb. Secure the hose using a suitable clamp appropriate to the hose construction and application.

What is a Barb to Metric Male Adapter?

A barb to metric male adapter provides a transition between flexible hose and a compatible female metric port. The barbed hose tail inserts into the hose, while the male metric thread connects to the corresponding female port and seals using an O-ring against the mating face.

For Custom Fluid Systems

With multiple metric thread and hose sizes available, these adapters provide a compact solution for fuel, oil, coolant, breather and other custom automotive fluid installations.

Adapter Type: Barb to Metric Male Adapter For connecting compatible flexible hose to a female metric port
Material: 6061-T6 Aluminium Lightweight, high-strength alloy
Finish: Black Anodised Protects against wear and corrosion

Hose Connection: Multi-Barb Hose Tail For connection to compatible flexible hose
Hose Retention: Barbed Secure with a suitable hose clamp for the hose and application
Thread Connection: Male Metric For connection to a compatible female metric port
Sealing Method: Flat Face with O-Ring O-ring seals against the mating face
Reusable: Yes Reuse only if the adapter, threads, sealing surface, O-ring and hose barb are free from damage

Available barb to metric male adapter sizes
Product Code	Metric Thread	Hose Barb Size
ADP-MP-MET-AL-M10X100-8	M10 x 1.00	5/16" 8mm
ADP-MP-MET-AL-M10X100-95	M10 x 1.00	3/8" 9.5mm
ADP-MP-MET-AL-M12X15-8	M12 x 1.5	5/16" 8mm
ADP-MP-MET-AL-M12X15-95	M12 x 1.5	3/8" 9.5mm
ADP-MP-MET-AL-M12X15-127	M12 x 1.5	1/2" 12.7mm
ADP-MP-MET-AL-M18X15-127	M18 x 1.5	1/2" 12.7mm
ADP-MP-MET-AL-M18X15-19	M18 x 1.5	3/4" 19mm

Hose barb sizes correspond to the nominal internal diameter of the compatible hose.

Fuel Systems
Oil Systems
Coolant Systems
Breather Lines
Custom Fluid Systems

Free repair or replacement for two years from the date of purchase. Learn more

Frequently Asked Questions

What are barb to metric male adapters used for?
They provide a transition between flexible hose and a compatible female metric port. The barbed end inserts into the hose, while the male metric connection threads into the corresponding female component.
What metric thread sizes are available?
The range includes M10 x 1.00, M12 x 1.5 and M18 x 1.5 male threads, with different hose barb sizes available depending on the selected thread.
How does the metric connection seal?
The metric connection uses an O-ring against the mating sealing face. The straight thread provides mechanical retention rather than forming the fluid seal itself.
Do I need thread sealant on the metric connection?
No. These metric variants are designed to seal using an O-ring against the mating face rather than thread sealant or PTFE tape.
What type of hose can I use with these adapters?
They are intended for compatible flexible hose designed for use with conventional barbed hose fittings. Match the hose internal diameter to the selected barb size and ensure the hose material is suitable for the fluid and operating conditions.
Do I need to use a hose clamp?
Yes, we recommend securing the hose with a suitable clamp appropriate to the hose construction and application. Do not assume a conventional barbed fitting is suitable for clamp-free installation unless the hose manufacturer specifically approves it.
Are these adapters reusable?
Yes, provided the adapter remains free from damage and the hose barb, threads and O-ring sealing surfaces are in good condition. Inspect the O-ring before reuse and replace it if damaged or deteriorated.