The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts within an insert and offering reliable performance in extreme conditions. These circular connectors, compliant with military specification MIL-DTL-38999 II, are environmentally sealed and capable of operating in temperatures ranging from -65 °C to 200 °C. With various mounting options including front and rear wall mount, jam nut, and box mount receptacles, as well as straight and 90-degree cable clamp plugs, they provide versatility for different applications. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and featuring plating options such as electroless nickel, they ensure durability and corrosion resistance. The Gold-plated contacts offer excellent conductivity, with a mating life of 500 cycles. RoHS compliant finishes are also available, making them suitable for diverse industrial and military uses requiring high-performance connectivity.
