Barb Fittings

Barb fittings from SMC designed to be used with soft tubes. Both raised screwdriver slot and recessed screwdriver slot available. Shown by a 'H' in the manufacturer part number for the raised, and the exclusion of the 'H' for the recessed.

SMC Series M Pneumatic Fitting, M3 Male Connector A, 4mm Barbed Connector B - M-3AU-4

This pneumatic fitting is a straight threaded adaptor designed for connecting M3 male threaded ports to 4mm barbed tubing. Operating effectively in both high and low-pressure environments, it accommodates a maximum operating pressure of 10 bar. With a temperature range suitable for various applications, it operates between -5°C and +60°C.

Features & Benefits

• Ease of connection with barbed tube fittings for secure attachment
• High retaining force ensures leak-free pneumatic connections
• Electroless nickel plating provides enhanced resistance to corrosion
• Compatible with multiple tube materials including nylon and polyurethane
• Designed for simple, reliable installation in tight spaces
• Robust performance at varying pressures makes it suitable for industrial applications

Applications

• Utilised in automation systems requiring pneumatic energy transfer
• Ideal for pneumatic systems in the electronics industry
• Employed in electrical and mechanical systems for compressed air distribution
• Perfect for needing quick and reliable tube connections

How does the fitting ensure a reliable connection in pneumatic systems?

The fitting features an innovative barb design that provides a high retaining force, allowing for easy tube insertion while maintaining a secure connection that prevents leaks.

What materials can be used with this fitting for optimal performance?

This fitting is compatible with soft nylon, nylon, and polyurethane tubing, making it versatile for various pneumatic applications.

What installations are recommended for this fitting in challenging environments?

It can be effectively used in compact spaces where a 360° rotating feature aids in installation without straining the connected tubing. Its durable construction allows it to function reliably even under high operational pressures.

How can I maximise the lifespan of this pneumatic fitting?

To ensure longevity, it is advisable to follow proper installation procedures and avoid overtightening the connections, which could damage the threads and gaskets.

Threaded Adaptors & Accessories

M5 Nickel plated miniature fittings offering a compact and space saving design
The tube has a large retaining force with hose nipples assuring easy removal
Suitable for nylon, soft nylon and polyurethane tubing

Pack(s)	Per Pack	Per unit*
1 - 4	£9.99	£0.999
5 - 9	£9.31	£0.931
10 - 24	£9.01	£0.901
25 +	£8.81	£0.881

Select all	Attribute	Value
	Brand	SMC
	Connector A	M3 Male
	Connector B	Barbed 4 mm
	Pneumatic Fitting Type	Straight Threaded Adaptor
	Connection Style	Threaded-to-Tube
	Manufacturer Series	M
	Maximum Operating Temperature	+60°C
	Maximum Operating Pressure	10 bar
	Minimum Operating Temperature	-5°C

	Select all
	Brand SMC
	Connector A M3 Male
	Connector B Barbed 4 mm
	Pneumatic Fitting Type Straight Threaded Adaptor
	Connection Style Threaded-to-Tube
	Manufacturer Series M
	Maximum Operating Temperature +60°C
	Maximum Operating Pressure 10 bar
	Minimum Operating Temperature -5°C

SMC M Series Straight Threaded Adaptor, M3 Male to Barbed 4 mm, Threaded-to-Tube Connection Style

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