Alternative stylings of the German name are Stahl-Panzer-Rohr-Gewinde, an abbreviated form StaPa-Rohr-Gewinde, and the acronym PG.
Overview
The standard, codified by the Deutsches Institut für Normung (DIN, German Institute for Standardization), is DIN 40430. Panzergewinde sizes are named with the prefix PG plus a nominal number which approximately corresponds to the maximum cable diameter (in millimeters) that can be passed through the conduit.
Beginning in 2000, the VDE standard for cable glands (VDE0619) was formally replaced by EN50262. After a transitional period of several years during which it could still be used, it was replaced in 2003 by a final metric fine thread with 1.5 mm (0.0591 in) pitch. Similarly, conduit threads were replaced by EN60423.
Even today, Panzergewinde cable glands are still often found on chemical reactors and bioreactors (for example, PG13.5 thread for screwing in sensors) and various other equipment, enclosures, junction boxes, and connectors.