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Pneumatic & Hydraulic Fittings

Keeping your pneumatic and hydraulic assemblies moving is crucial to your operation. Make sure you’re moving forward with our range of hydraulic fittings and pneumatic connectors. Whether you’re searching for tube fittings, push connectors, or adaptors, we have a wide range of parts available in our collection online.

At RS, we’ve developed a selection of high-quality, great-value pneumatic and hydraulic fittings and accessories that can help you connect the hoses, tubes, and pipes of a hydraulic system together. Whether they’re for home, commercial or industrial use, you’ll find everything you need and more right here.

What are hydraulic fittings and how do they work?

Hydraulic fittings connect hoses, pipes, and tubes in a hydraulic system. Most fittings and fixtures have a male and female component that join to form a connection. These help to contain and direct the flow of hydraulic fluid in a conductor, while preventing leaks and maintaining system pressure.

Depending on the hydraulic and pneumatic fittings you choose, you’ll be able to change the flow direction, elevation of lines, and split flow. When looking into methods of assembly, you’ll find that crimping is the most common. Once the crimp specifications have been checked for your hose and fitting, a crimping machine is adjusted to the appropriate diameter setting.

You’ll also notice that hydraulic connectors and fittings are made from a number of different materials including stainless steel, brass, and plastic. Because of the wide array of materials, they’re created from, pneumatic system fittings boast a range of performance capabilities.

It is more common for hydraulic fittings to be made from metals than plastic because higher pressures need stronger materials. Brass connectors are strong, durable, and corrosion-resistant. Stainless steel has a high heat resistance but is typically more expensive.

What are hydraulic fittings used for?

There are numerous applications for hydraulic fittings and pneumatic connectors. These parts are commonly used in hydraulic-powered applications in plumbing, robotics, assembly lines, and in heavy-duty equipment.

When looking at pipes and tubes for your application, it can be challenging to use them in moving operations because of their rigidity. For example, a construction digger that requires a hydraulic system but also needs the freedom of movement to operate their tool can place limitations on which hydraulic connectors are used. On the other hand, hydraulic pipes can allow flexibility in tool arm movements that are not possible with other tubes or pipes.

Another application that utilizes hydraulic fittings is in large complex vehicles like planes. They require hydraulics to operate wing movements and landing gears, using multiple hydraulics systems to help achieve movement.

Why choose RS for your hydraulic fittings and hydraulic connectors?

We’re committed to providing high-quality components and devices to our customers, and our hydraulic fittings are built to deliver for the long haul. Every product we offer to our customers is built on the ethos of durability, quality, and long-term satisfaction. That’s why we’re one of the leading distributors of electronics across North America. Whether you’re searching for pneumatic quick connect fittings, pneumatic air fittings, pneumatic control fittings, or any other types of hydraulic connectors, we have them right here.

Have you got a question about one of our hydraulic fittings or want some more information about any of the products available at RS? You can find further advice on our ranges via our expert content hub, or you can get in touch with our friendly team today to get the information you need ahead of your order.

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SMC Corporation KQ2H07-34AS
Mfr. Part #: KQ2H07-34AS
RS Stk #: 70244693
In Stock: 3117
1 $2.18 /ea
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SMC Corporation KQ2L07-34AS
Mfr. Part #: KQ2L07-34AS
RS Stk #: 70244702
In Stock: 1532
1 $2.55 /ea
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SMC Corporation KQ2T07-00A
Mfr. Part #: KQ2T07-00A
RS Stk #: 70244708
In Stock: 51
On Order: 1270
1 $3.91 /ea
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SMC Corporation KQ2L07-35AS
Mfr. Part #: KQ2L07-35AS
RS Stk #: 70245187
In Stock: 1299
1 $2.82 /ea
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Festo QSML-M5-6
Mfr. Part #: QSML-M5-6
RS Stk #: 70990974
In Stock: 306
On Order: 270
1 $3.69 /ea
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SMC Corporation KQ2H07-35AS
Mfr. Part #: KQ2H07-35AS
RS Stk #: 70244694
In Stock: 362
1 $2.18 /ea
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SMC Corporation KQ2L07-32A
Mfr. Part #: KQ2L07-32A
RS Stk #: 70245185
In Stock: 921
On Order: 1340
1 $3.30 /ea
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SMC Corporation KQ2H07-00A
Mfr. Part #: KQ2H07-00A
RS Stk #: 70244706
In Stock: 529
1 $2.60 /ea
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SMC Corporation KQ2E07-00A
Mfr. Part #: KQ2E07-00A
RS Stk #: 70244692
In Stock: 314
1 $4.61 /ea
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SMC Corporation KQ2H06-00A
Mfr. Part #: KQ2H06-00A
RS Stk #: 70247127
In Stock: 375
1 $2.58 /ea
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Festo QSML-M5-4
Mfr. Part #: QSML-M5-4
RS Stk #: 70990972
In Stock: 445
1 $3.69 /ea
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SMC Corporation KQ2U07-00A
Mfr. Part #: KQ2U07-00A
RS Stk #: 70244709
In Stock: 1614
On Order: 850
1 $4.64 /ea
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SMC Corporation KQ2L06-M5A
Mfr. Part #: KQ2L06-M5A
RS Stk #: 70245206
In Stock: 575
1 $3.30 /ea
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SMC Corporation KQ2L11-35AS
Mfr. Part #: KQ2L11-35AS
RS Stk #: 70244703
In Stock: 1989
1 $4.06 /ea
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SMC Corporation KQ2H11-35AS
Mfr. Part #: KQ2H11-35AS
RS Stk #: 70244701
In Stock: 206
On Order: 370
1 $3.94 /ea
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SMC Corporation KQ2H04-M5A
Mfr. Part #: KQ2H04-M5A
RS Stk #: 70245176
In Stock: 1070
1 $1.61 /ea
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SMC Corporation KQ2L04-M5A
Mfr. Part #: KQ2L04-M5A
RS Stk #: 70245201
In Stock: 1
On Order: 830
1 $2.71 /ea
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SMC Corporation KQ2L06-01AS
Mfr. Part #: KQ2L06-01AS
RS Stk #: 70245205
In Stock: 258
1 $2.55 /ea
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Festo QSL-1/4-6
Mfr. Part #: QSL-1/4-6
RS Stk #: 70990789
In Stock: 12
On Order: 102
1 $3.50 /ea
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SMC Corporation KQ2U06-00A
Mfr. Part #: KQ2U06-00A
RS Stk #: 70245222
In Stock: 429
1 $4.64 /ea
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Availability
Price
Type
Tube Size
Port Size
Connection Style
Gender
Thread Type
Body Material
Standards
Series
In Stock: 3117
1 $2.18 /ea
Male Connector
1/4 in.
0.125 in
One Touch
Male
NPT
Brass| Plastic
ANSI/ASMEB 1.20.1 - 1983, RoHs Compliance
KQ2 Series
In Stock: 1532
1 $2.55 /ea
Elbow
1/4 in.
0.125 in
One Touch
Male
NPT
Brass| Plastic
ANSI/ASMEB 1.20.1 - 1983, RoHs Compliance
KQ2 Series
In Stock: 51
On Order: 1270
1 $3.91 /ea
Union Tee
1/4 in.
0.25 in
One Touch
Female
Brass| Plastic
RoHs Compliance
KQ2 Series
In Stock: 1299
1 $2.82 /ea
Elbow
1/4 in.
0.25 in
Threaded
Male
NPT
Plastic
KQ2 Series
In Stock: 306
On Order: 270
1 $3.69 /ea
Elbow
6 mm
5 mm
Push to Connect
Plastic
QS Series
In Stock: 362
1 $2.18 /ea
Male Connector
1/4 in.
0.25 in
One Touch
Male
NPT
Brass| Plastic
ANSI/ASMEB 1.20.1 - 1983, RoHs Compliance
KQ2 Series
In Stock: 921
On Order: 1340
1 $3.30 /ea
Elbow
1/4 in.
10 to 32 UNF
Threaded
Male
UNF
Brass| Plastic
RoHs Compliance, JIS B 0212 2A, Class 2B
KQ2 Series
In Stock: 529
1 $2.60 /ea
Straight-Union
1/4 in.
0.25 in
One Touch
NPT
Brass| Plastic
RoHs Compliance
KQ2 Series
In Stock: 314
1 $4.61 /ea
Bulkhead Union
1/4 in.
0.25 in
One Touch
UNF
Brass| Plastic
RoHs Compliance
KQ2 Series
In Stock: 375
1 $2.58 /ea
One-Touch Fitting
6 mm
6 mm
Push In-Pneumatic Straight Tube-To-Tube Adapter
Male
C3604| Polybutylene Terephthalate (PBT)| PP| Stainless Steel 303
RoHs Compliance
KQ2 Series
In Stock: 445
1 $3.69 /ea
Elbow
4 mm
5 mm
Push to Connect
Plastic
QS Series
In Stock: 1614
On Order: 850
1 $4.64 /ea
Union Y
1/4 in.
0.25 in
One Touch
Brass| Plastic
RoHs Compliance
KQ2 Series
In Stock: 575
1 $3.30 /ea
One-Touch Fitting
6 mm
M5 mm
Male Pneumatic Elbow Threaded-To-Tube Adapter
Male
M
C3604| Polybutylene Terephthalate (PBT)| PP| Stainless Steel 303
RoHs Compliance, JIS B 0205
KQ2 Series
In Stock: 1989
1 $4.06 /ea
Elbow
3/8 in.
0.25 in
One Touch
Male
NPT
Brass| Plastic
ANSI/ASMEB 1.20.1 - 1983, RoHs Compliance
KQ2 Series
In Stock: 206
On Order: 370
1 $3.94 /ea
Male Connector
3/8 in.
0.25 in
One Touch
Male
NPT
Brass| Plastic
ANSI/ASMEB 1.20.1 - 1983, RoHs Compliance
KQ2 Series
In Stock: 1070
1 $1.61 /ea
One-Touch Fitting
4 mm
M5 mm
Male Pneumatic Straight Threaded-To-Tube Adapter
Male
M
C3604| Polybutylene Terephthalate (PBT)| PP| Stainless Steel 303
RoHs Compliance, JIS B 0205
KQ2 Series
In Stock: 1
On Order: 830
1 $2.71 /ea
One-Touch Fitting
4 mm
M5 mm
Male Pneumatic Elbow Threaded-To-Tube Adapter
Male
M
C3604| Polybutylene Terephthalate (PBT)| PP| Stainless Steel 303
RoHs Compliance, JIS B 0205
KQ2 Series
In Stock: 258
1 $2.55 /ea
One-Touch Fitting
6 mm
0.125 in
Male Pneumatic Elbow Threaded-To-Tube Adapter
Male
R
C3604| Polybutylene Terephthalate (PBT)| PP| Stainless Steel 303
RoHs Compliance, JIS B 0203
KQ2 Series
In Stock: 12
On Order: 102
1 $3.50 /ea
Elbow
6 mm
0.25 in
Push to Connect
R
Plastic
QS Series
In Stock: 429
1 $4.64 /ea
One-Touch Fitting
6 mm
6 mm
Push In-Pneumatic Y Tube-To-Tube Adapter
C3604| Polybutylene Terephthalate (PBT)| PP| Stainless Steel 303
RoHs Compliance
KQ2 Series
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