Table of Contents

When it comes to identifying the specifications of a fitting, here’s a straightforward method to follow:

1,Double Ended Striaght Male Thread Hydraulic Fittings:

Start by selecting one end of the fitting.

Use a caliper gauge to measure the outside diameter (O.D.) to 18mm.

If this end resembles a ferrule type fitting, it’s indicative of either light or heavy-duty construction.

straight male thread hydraulic bite type fitting
straight male thread hydraulic bite type fitting

2.Tube Fitting Measurement:

Focus on measuring the inside diameter (I.D.), primarily in terms of C/D.

An 18mm ferrule can pair with either a 10 or a 12.

measure straight male thread hydraulic bite type fitting
measure straight male thread hydraulic bite type fitting

By measuring the inside diameter of the ferrule, determine if it’s light (C) or heavy (D).

For instance, an inside diameter close to 12mm suggests type C, with a code of 18.

3,Measuring the Other End

  • Proceed to measure the outside diameter of the opposite end.
  • If the caliper shows a measurement of 20.84mm and it’s not a ferrule type fitting, it likely doesn’t conform to the metric system.
  • In the imperial system, the closest outside diameter is 21.5mm, indicating a 4-minute imperial fitting with a code of 08.
measure straight male thread hydraulic bite type fitting
measure straight male thread hydraulic bite type fitting

4,Combining the Data

  • By amalgamating the collected data (1, C, 18, B, 08), conclude that the fitting is 1CB-18-08.
BSP Thread With Capitive Seal 1CB-WD/DB-WD 1CB-WD/RN DB-WD
BSP Thread With Capitive Seal 1CB-WD/DB-WD 1CB-WD/RN DB-WD

Remember, slight measurement discrepancies are normal. Refer to an imperial/metric fittings size comparison table for accuracy. If uncertainty persists, a tooth gauge can provide further confirmation.

By following these steps, you can confidently discern the specifications of your fitting.

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