MIL-DTL-38999 Series II connectors are robustly designed for harsh environments, featuring up to 128 contacts housed within an insert. These connectors are meticulously engineered for environmental sealing, ensuring reliable performance in extreme conditions with an operating temperature range spanning from -65 °C to 200 °C. Available in various configurations including front wall mount, rear wall mount, jam nut, rear box mount, and front box mount receptacles, they offer flexibility for diverse applications. The connectors come in 9 shell sizes and 52 insert arrangements, utilizing M39029 rear release crimp contacts for secure connections. Constructed with durable aluminum shells and offering multiple plating options such as electroless nickel and cadmium finishes, these connectors prioritize both performance and longevity. meeting MIL-DTL-38999 II specifications, they are ideal for military and aerospace applications, ensuring high reliability and durability.