QC Hydraulics stainless steel DIN 2353 tube fittings meets DIN 2353 & ISO 8434-1 standards. DIN stands for “Deutsches Institut für Normung”, meaning “German institute for Standardization”.

DIN Metric and BSPP tube fittings 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 compatible with leading brands of fittings. Such as, Parker, Eaton, DK-LOK, Superlok…

DIN 2353 fittings consist of a body, cutting ring (ferrule) and nut. On assembly, the two cutting edges of the ring (ferrule) bite into the outer surface of the tube ensuring the necessary holding power and seal for high operating pressures and extreme vibration.

DIN tube fittings thread configurations:

  • Metric to Metric

  • Metric to BSP 60 Cone Male
  • Metric to BSP O-ring Seal
  • Metric to BSP ES Seal
  • Metric to NPT Male
  • Metric to ORB Male Seal

DIN tube fittings thread Features:

  • Bite type single ferrule design
  • DIN 2353 & ISO 8434-1
  • Useable with SS tubing


Straight, 45 Elbow, 90 Elbow, Tee, Cross, Cap, Plug

Metric OD Size:

4 mm to 42 mm


Stainless Steel(SS 316, SS 316L, SS 316Ti, 1.4571)


  • Construction Equipment
  • Drilling Platforms
  • Hydropower Plants
  • Machine Tools
  • Railway Technology
  • Recycling Equipment
  • Shipbuilding
  • Wind Turbines
  • Mobile Hydraulic Equipment
  • Mining
  • Stationary Hydraulic Equipment

DIN 2353 Pressure Series:

DIN 2353 tube fittings offer in 3 different pressure series – LL for Extra Light used in low pressure applications, L for Light used medium pressure applications and S for Heavy used high pressure applications. They are identified by measuring the thread size and pitch as well as tube OD.

Material Working Temperature Designation Material Working Temperature Pressure Designation Working Pressure
Stainless Steel -60 °C to +400 °C BN NBR -35 °C to +100 °C Low (LL) Up to 100 bar
Steel -40 °C to +120 °C VT FKM -25 °C to +200 °C Medium (L) Up to 500 bar
Brass -60 °C to +175 °C TE PTFE -60 °C to +240 °C High (S) Up to 800 bar

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