PG (Panzergewinde) thread

What is a PG (Panzergewinde) Thread?

The PG (Panzergewinde) thread is a German-origin threading standard, mainly used in electrical installations and protective conduit systems. The PG thread (Panzergewinde) was developed for protecting and connecting electrical wires in metal armored conduits. Connections with PG threads are common in electrical engineering, ensuring tight and secure connections for cable glands and junction boxes.

Features of the PG (Panzergewinde) Thread

The PG thread system is based on the metric system, but its thread pitch and diameter differ from the standard ISO metric thread. PG thread has a finer pitch, allowing for thinner walls and lighter connections compared to BSP or NPT threads. This makes it especially useful in electrical installations where compact and durable connections are needed.

PG threads are available in a variety of sizes, identified by numbers such as PG7, PG9, PG11, PG13.5, PG16, PG21, and so on. Each size corresponds to a specific cable diameter, helping ensure a proper fit for cable glands and protective conduits.

Use of PG Threads in Machine Shops and Workshops

In machine shops and workshops, PG threads can be used for electrical enclosures, cable glands, and electrical cabinet connections, especially where a durable and mechanically protective solution is needed. PG-threaded connectors are also used in automation applications, where cable protection and secure wiring are critical.

In electromechanical assemblies, PG-threaded parts can be machined precisely by turning or threading. This enables direct connection with other components without extra adapters, simplifying installations and enhancing reliability.

Comparison of PG Threads to Other Thread Standards

PG threads are different from other commonly used thread types, such as metric ISO threads and BSP threads. Compared to metric threads, the PG thread has a smaller pitch, making it a better choice for electrical installations where cable sealing and protection are important. BSP and NPT threads, on the other hand, are more widely used in pressure piping and fluid connections, where they provide better sealing for liquids and gases.

PG threads are mainly used in Europe, but their usage has declined due to the increasing prevalence of standardized metric threads. Nevertheless, it remains important in many electrical applications and mechanical assemblies.

Summary

The PG thread is a threading type developed specifically for electrical installations, providing tight and durable connections for cables and protective conduits. It is widely used in machine shops and workshops for electrical enclosures and cable entries. Thanks to its finer pitch, the PG thread differs from metric and BSP threads, making it especially suitable for electromechanical connections.