MIL-DTL-38999 Series II connectors are designed for rugged environments, offering up to 128 contacts in a sealed insert. With an impressive operating temperature range of -65°C to 200°C, these connectors provide reliable performance in extreme conditions. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. Featuring aluminum shells with plating options like electroless nickel and cadmium olive drab, they ensure durability and corrosion resistance. The connectors use M39029 rear release crimp contacts, with sizes ranging from 22D to 12, supporting different applications. Compliant with military specifications, they are ideal for demanding military and aerospace environments.