The D38999 family of circular connectors has been the military and aerospace standard since the 1970s, trusted worldwide for reliability in the harshest environments. Amphenol is one of the original qualified manufacturers of D38999 connectors and continues to produce them in facilities around the globe. For decades, Amphenol has supported aviation, defense, space and industrial programs with D38999 solutions, making them one of the most established and relied-upon connector families in the world.