MIL-DTL-38999 Series II connectors boast exceptional durability and performance, with up to 128 contacts housed in a robust insert. Designed for harsh environments, these connectors are fully sealed and rated for temperatures ranging from -65 °C to 200 °C. Various mounting options, including front and rear wall mount, jam nut, and box mount receptacles, provide versatility for different applications. Available in 9 shell sizes and 52 insert arrangements, they feature removable crimp contacts for easy installation. Crafted from aluminum with multiple plating options, including RoHS-compliant finishes, these connectors ensure reliable conductivity and protection against environmental factors. The straight plug configuration with a bayonet mating type, gold contact plating, and electroless nickel or cadmium olive drab finish, guarantee high performance in demanding situations. With a service rating of I and a mating life of 500 cycles, they are ideal for critical applications in aerospace, defense, and industrial settings.