When a connector listing mentions MIL-DTL-83513 or GJB246, it is easy to read the reference as a simple quality badge. A more useful approach is to treat the standard as a set of performance questions: What is the contact resistance limit? How is the connector tested under vibration and shock? What temperature range does it need to survive? How many mating cycles are expected? These questions matter because micro rectangular connectors often carry low-level signals in tight spaces, where small changes in contact behavior can affect the whole system. Understanding the standard's focus areas helps readers compare connector statements without relying on marketing language.