What are DIN fittings?

National standards organisation of Germany

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"DIN" redirects here. For other uses, see Din (disambiguation)

Deutsches Institut für Normung e.V. (DIN; in English, the German Institute for Standardisation) is a German non-profit organization and acting as national organization for standardization. DIN is the German ISO member body. DIN is headquartered in Berlin. There are around thirty thousand DIN Standards, covering nearly every field of technology.

History

Founded in as the Normenausschuß der deutschen Industrie (NADI, "Standardisation Committee of German Industry"), the NADI was renamed Deutscher Normenausschuß (DNA, "German Standardisation Committee") in to reflect that the organization now dealt with standardization issues in many fields; viz., not just for industrial products. In it was renamed again to Deutsches Institut für Normung, or 'DIN' and is recognised by the German government as the official national-standards body, representing German interests at the international and European levels.

The acronym, 'DIN' is often incorrectly expanded as Deutsche Industrienorm ("German Industry Standard"). This is largely due to the historic origin of the DIN as "NADI". The NADI indeed published their standards as DI-Norm (Deutsche Industrienorm). For example, the first published standard was 'DI-Norm 1' (about tapered pins) in . Many people still mistakenly associate DIN with the old DI-Norm naming convention.

One of the earliest, and probably the best known, is DIN 476 &#; the standard that introduced the A-series paper sizes in &#; adopted in as International Standard ISO 216. Common examples in modern technology include DIN and mini-DIN connectors for electronics, and the DIN rail.

DIN SPEC , published in , is "the first German standard to be published under an open license (CC-BY-SA 4.0) [...] to implement an open standardisation process".[1]

DIN organisation

DIN is a nonprofit organization by German law. The nonprofit owns DIN Solutions GmbH, which produces the DIN contents and DIN Media (formerly Beuth Verlag), which sells the DIN-standard manuals. DIN is shareholder of DIN Bauportal GmbH and DQS Holding GmbH.[2]

DIN standard designation

The designation of a DIN standard shows its origin (# denotes a number):

• DIN # is used for German standards with primarily domestic significance or designed as a first step toward international status. E DIN # is a draft standard and DIN V # is a preliminary standard.
• DIN EN # is used for the German edition of European standards.
• DIN ISO # is used for the German edition of ISO standards.
• DIN EN ISO # is used if the standard has also been adopted as a European standard.,

Some of the DIN standards date back to the time of Nazi Germany. For example, standard DIN , which describes the German Phonetic spelling code, is based on the postal spelling table, that was heavily edited by the Nazis. Until it specified "D" for David, "S" for Samuel, "Z" for Zacharias and "N" for Nathan. However, this went against the Nazis' ethnic-racial ideology and they decided to revise the letter board. The postal spelling table was partially revised in and formed the basis for the first version of the standard in . The standard was revised again in , using city names instead of person names.[3][4]

Examples of DIN standards

Access to standards

DIN standards are not freely accessible to the public. DIN sells subscriptions with the descriptions of the DIN-standards via DIN Solutions GmbH and DIN Media.

For four EN standards, which are available as DIN-EN standards for a fee from DIN Media GmbH (formerly Beuth Verlag),[5][6][7][8] the European Court of Justice (ECJ) decided on March 5, , that these must be made available free of charge because these standards are part of European Union law.[9]

Critics

How DIN creates standards is not transparent.[citation needed] The majority of the standardization committees consist of representatives of the companies that are affected by the standards. DIN does not publish the names of committee members.[10]

In , the Federal Ministry for Housing, Urban Development and Building launched an initiative to question DIN standards because they are considered a cost driver. &#;A central goal is to speed up planning and construction and reduce construction costs in order to create more affordable housing. &#;The building standards are now being reviewed,&#; said a spokesman for Klara Geywitz's (SPD) ministry in .[11]

See also

References

Introduction:

Welcome to our blog about JIS and DIN hydraulic fittings! In this guide, we will look at these two types of fittings, their uses, benefits, and what makes them different. Whether you are a professional in the hydraulic field or just starting out, this guide will give you helpful information.

Understanding JIS Fittings:

JIS (Japanese Industrial Standard) fittings are hydraulic fittings commonly used in Japan and other parts of Asia. Like DIN fittings, they connect hydraulic hoses and tubes in machines used in factories, construction sites, and farms. JIS fittings are known for their 30-degree flare angle and BSP threads. This angle helps create a strong seal between the fitting and the hose or tube, preventing leaks when under pressure. JIS fittings come in many sizes, from small ones for low-pressure systems to larger ones for high-pressure use. They are usually made of stainless steel, steel, or brass and can be male or female fittings.

Exploring DIN Fittings:

DIN (Deutsches Institut für Normung) fittings are hydraulic fittings often seen in Europe. They have a 24-degree cone and metric threads. A DIN fitting connects Metric tubing to fitting thread connections in a way that holds well even when there&#;s high pressure or lots of shaking. These fittings have three parts: a body, ferrule, and nut. The ferrule&#;s sharp edges bite into the tubing&#;s outer surface, making sure it holds tight. Stainless steel DIN fittings are popular in breweries, wineries, and the food, beverage, pharmaceutical, and chemical industries.

Differences Between JIS and DIN Hydraulic Fittings:

JIS and DIN fittings do the same job but in slightly different ways. Here are some key differences:

• Flare Angle: The big difference is the flare angle. DIN fittings have a 24-degree flare angle, while JIS fittings have a 30-degree flare angle. This difference changes how these fittings seal and connect to the hydraulic tubing or hose.
• Thread Type: DIN fittings have metric threads, and JIS fittings have BSP threads. So, you might need different tools and adapters for DIN fittings than for JIS fittings when working on hydraulic systems.
• Standards: DIN fittings follow German Industry Standards, and JIS fittings follow Japanese Industrial Standards. This means there might be small differences in specifications and performance standards between DIN and JIS fittings.

Hydraxio offers a wide variety of stainless steel DIN and JIS hydraulic fittings. We have been providing these for over two decades. If you have any questions, feel free to ask us.

Conclusion:

Now you know more about JIS and DIN hydraulic fittings, their benefits, and how they are different. Understanding these fittings will help you whether you are working on hydraulic systems in Europe or Asia.

Contact us to discuss your requirements of Hose Fittings for Construction Machinery manufacturer. Our experienced sales team can help you identify the options that best suit your needs.