MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These connectors are environmentally sealed and can withstand temperatures ranging from -65 °C to 200 °C. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount, they offer versatility in installation. With 52 insert arrangements and M39029 rear release crimp contacts, these connectors ensure reliable performance. Constructed with aluminum shells and plated with options including gold, electroless nickel, and cadmium-free finishes, they meet stringent military specifications. Suitable for applications requiring high durability, these connectors provide secure, conductive connections with a mating life of 500 cycles.