MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These environmentally sealed connectors can operate in extreme temperatures ranging from -65°C to 200°C. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they offer flexibility in installation. With 52 insert arrangements utilizing M39029 rear release crimp contacts, these connectors ensure secure and reliable connections. Constructed with aluminum shells and offered in different plating options including gold, electroless nickel, and cadmium finishes, they meet stringent military specifications for durability and performance. Perfect for applications requiring high reliability in challenging conditions, these connectors are essential for mission-critical systems.