MIL-DTL-38999 Series II connectors offer rugged reliability with up to 128 contacts in an environmentally sealed insert. Operating in extreme temperatures ranging from -65 °C to 200 °C, these connectors are ideal for harsh environments. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, they provide flexibility in installation. Featuring 52 insert arrangements and utilizing M39029 rear release crimp contacts, these connectors ensure secure and efficient connections. Constructed with aluminum shells and offering plating options including electroless nickel and cadmium finishes, they meet demanding military specifications for durability. With gold-plated contacts and a mating type of bayonet, they guarantee reliable conductivity and ease of use. The MIL-DTL-38999 Series II connectors are designed for applications requiring high performance in challenging conditions.