These circular connectors were originally designed to meet requirements for cable-to-panel applications in the military and aerospace market. Now they are used across a wide range of industries that benefit from their high-performance qualities. By Air Electro, Inc. The engineers and procurement professionals in both the civil and military aerospace industries work with QPL-approved (Qualified … Continue reading The Differences Between MIL-DTL-38999 Series I, II, and III Connectors