Metric Thread

Similar to heavy DIN metric fittings, light DIN metric fittings are a class of hydraulic adapter fittings frequently used in a variety of applications. They differ from other fitting techniques because of particular traits that they possess.

Design and Resemblance: Light DIN metric fittings resemble SAE (American) and British fittings in terms of design. They have metric threads and employ particular sealing techniques.

DIN Tube Fittings: The DIN tube fittings are one of the more well-liked light DIN metric fittings series. When connecting a DIN male fitting to a DIN female fitting, the sealing is done on the inside of the male fitting, which is where these fittings have a 24° chamfered seat. The 24° seat is used to identify DIN fittings.

Identification System: To ensure compatibility and appropriate fitting selection, search for the DIN tube design with a 24° chamfered seat, verify the indicated duty level (LL, L, or S), and figure out the thread pitch when recognizing or measuring light DIN metric fittings.

DIN fittings use an identifying scheme that is common among manufacturers. The tube series and outer diameter (O.D.) size are combined in this approach to identify the fitting. For instance, a fitting with an 8mm size and the designation "light duty" would be marked with the letters "L08."

The DIN designations different duty ratings are used to categorize DIN fittings:

  • - LL (Extra Light Duty): Fittings designed for applications with minimal stress and pressure requirements.
  • - L (Light Duty): Fittings suitable for light-duty applications with moderate stress and pressure requirements.
  • - S (Heavy Duty): Fittings designed for heavy-duty applications with high stress and pressure requirements.

Thread Pitch: The thread pitch, which is the distance between two threads, is used to identify metric threads on DIN fittings. As opposed to American SAE and British Standard threads, which measure in threads per inch, this is different. All Metric DIN fittings use one of three standard thread pitches: 1.0mm, 1.5mm, or 2.0mm.