External Thread

What does External Thread mean?

The term “External Thread” refers to a connection whose threaded surface is on the outside. In pneumatic technology, the term therefore describes the connection port of a fitting. For proper classification, it is important not to confuse the thread with the shape of the coupling or the connected hose.

Whether a connection can be used does not depend on the term alone. The specifications of the intended mating fitting and the specific application are decisive. The designation therefore initially serves as a guide for the technical check.

Which specifications are relevant?

Before choosing, it is useful to note the connection type, thread form, and nominal size of the mating fitting. The material, sealing concept, operating pressure, and temperature range should also be checked against the technical documentation. Installation space, accessibility, and the desired ability to disconnect the connection may also play a role.

Check in particular whether an internal thread or another connection type is required. Identical numerical or inch specifications do not automatically mean the same thread design. If you are unsure, the information on the existing port or in the manual can help; for incompatible systems, the suitable adapter should be clarified with a specialist.

Related categories and topics

The following categories cover related topics and help you clarify your application.

Common questions about external threads