Tube Fittings for DIN 2353

Hy-Lok USA, Inc. DIN 2353 tube fittings are most commonly used in the industrial hydraulics and pneumatics field.

Metric O.D. sizes range from 4mm to 42mm in three materials; brass, carbon steel, and stainless steel. Numerous body configurations and threaded connections allow DIN 2353 fittings to meet many connection challenges. Available in three series of tube port end connections to satisfy a variety of system requirements. For full details, view our catalog on DIN 2353 Tube Fittings.

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DIN Fitting Applications

DIN connections are used in tube fittings, alternating valves, banjo fittings, and check & non-return valves. Hy-Lok Corp. DIN fittings are designated for the use of commercial hydraulic oils. If it is special fluids, please contact our technical support team

For more information, find a Hy-Lok distributor in your area.


Fitting materials:




-40°C up to +120°C (DIN 3859)


-60°C up to +175°C

Stainless Steel

-60°C up to +400°C (DIN 17440)

Pressure Range:

Pressure Designation

Working pressure, bar

Low (LL)

Up to 100 bar

Medium (L)

Up to 500 bar

High (S)

Up to 800 bar

 Surface Protection:

  • All range of fittings are galvanized and yellow passivated
  • All weldable fittings are phosphate
  • Carbon Steel can be plated with nickel on request


If you have any questions about any of our products or services, don’t hesitate to give us a call. For any inquiries, fill out the form and one of our Hy-Lok representative will contact you soon.


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