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Metric and imperial
Hoses & connectors
Metric and imperial hoses / connectors differ mainly in the units of measurement used to determine their dimensions.
Metric hoses have their dimensions in the metric system, measured in millimeters and meters. In contrast, imperial hoses/connectors use the imperial system and specify their dimensions in inches. These different systems make metric and imperial hoses/connectors not directly compatible. In Europe and many other countries, the metric system is common, while the imperial system is preferred in the USA.
Metric hoses / connectors
Metric hoses / connectors are measured according to the metric system, which is based on millimeters (mm). These hoses are widely used in Europe and many other parts of the world. The important dimensions are the inner diameter (ID), the outer diameter (OD) and the wall thickness, all given in millimeters.
Example of metric hose specifications:
- Inner diameter (ID): 10 mm
- Outer diameter (OD): 15 mm
- Wall thickness: 2.5 mm
Inch connectors / hoses
Inch connectors and hoses are measured according to the imperial system, which is based on inches. One inch corresponds to 25.4 millimeters. These connectors and hoses are particularly common in the USA, Great Britain and other countries that use the imperial system. Here too, the important dimensions are the inside diameter (ID), the outside diameter (OD) and the wall thickness, albeit in inches.
Example of imperial hose specifications:
- Inner diameter (ID): 1/2 Zoll (0.5 inches)
- Outer diameter (OD): 3/4 Zoll (0.75 inches)
- Wall thickness: 1/8 Zoll (0.125 inches)
Difference and applications
The choice between metric and imperial connectors & hoses often depends on the geographical location and the specific requirements of the application. In international projects, it is important to use the correct units of measurement to avoid compatibility issues.
Application examples:
- Metric: Commonly used in automotive, engineering and industrial applications in Europe.
- Imperial: Often used in construction, agriculture and industry in countries that use the imperial system.
When working with both systems, it is important to make accurate conversions:1 inch = 25.4 millimeters
- To convert from inches to millimeters, multiply the value in inches by 25.4;
- To convert from millimeters to inches, divide the value in millimeters by 25.4.
Conclusion: Choosing the right hose or connector is crucial for the functionality and safety of your system. Make sure you take into account the specific requirements and the corresponding units of measurement. Discover our extensive range of metric and imperial connectors / hoses (go to store). If you have any questions, please do not hesitate to contact us!
