Essential International Adapters Content
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With their growing popularity globally, many U.S. OEMs are adopting DIN fittings.
This, combined with the rise in equipment being imported into the Americas from European manufacturers is resulting in DIN metric fittings becoming more common in the U.S.
DIN Metric and BSPP (British Standard Parallel Pipe) are the most common thread styles in Europe. DIN type tube fittings conform to the requirements of ISO 8434-1, DIN 2353, and DIN EN 3850 standards. This ensures the interchangeability with leading brands of fittings.
You may already be familiar with the term “DIN Fittings” but do you know what it actually stands for and what DIN fittings are commonly used for?
DIN stands for “Deutsches Institut für Normung”, which means “German institute for Standardization”. DIN 2353 tube fittings are most commonly used in industrial, oil & gas and construction equipment in hydraulic and pneumatic applications. Metric O.D. sizes range from 4mm to 42mm, and the most common industrial applications use carbon steel or stainless steel material.
In referring to the various types of flanges used in the world markets, it is important to make the comparison to the Caterpillar Code 61 and 62 flange (SAE J518). As with other flanges, the female port hole on the Caterpillar flange is unthreaded with 4 bolt holes surrounding it at the corners. The male has a flanged head with an O-ring grove and with holes to match the port.
Like Caterpillar in the U.S. and Komatsu in Japan, there is a French standard flange fitting known as the Poclain 24 flange. The Poclain flange derives its name from the Poclain excavator company, founded by Georges Bataille in France in 1927 and was a leader on the world market because of its revolutionary hydraulic motor.