MIL-DTL-38999 Series II connectors with up to 128 contacts offer reliable performance in harsh environments, with an operating temperature range of -65 °C to 200 °C. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount, these connectors feature thin-walled, restricted-length designs for space efficiency. Compliant with military specification MIL-DTL-38999 II, they ensure durability and performance in demanding applications. Constructed with aluminum shells and offering multiple plating options including gold, electroless nickel, and cadmium finishes, these connectors provide excellent conductivity and corrosion resistance. The use of M39029 rear release crimp contacts ensures secure connections, with the option for RoHS compliant, cadmium-free finishes available. Suitable for a wide range of industrial and military applications, these connectors are designed for longevity, with a contact mating life of 500 cycles. With a female contact gender and socket contact style, they are ideal for environment-resistant box and through bulkhead mounting receptacle types.