MIL-DTL-38999 Series II connectors feature up to 128 contacts enclosed in an insert, designed for harsh environment applications with an operating temperature range of -65 °C to 200 °C. Offering various receptacle styles including front and rear wall mount, jam nut, and box mount options, these connectors ensure secure connections in diverse setups. Compliant with military specification MIL-DTL-38999 II, they are built for reliability in demanding environments. With options for RoHS-certified finishes, such as cadmium-free platings, they cater to modern environmental standards. Utilizing gold-plated removable crimp contacts, these connectors guarantee efficient signal transmission with a service rating of I and a mating life of 500 cycles. The aluminum shell construction, along with environmental sealing, ensures durability and ingress protection. Ideal for applications requiring conductivity and environmental resistance, these connectors, in shell size 12 with contact size 16(4), provide a rugged and reliable solution for military, aerospace, and industrial systems.