MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With environmental sealing and a wide operating temperature range of -65 °C to 200 °C, these connectors ensure reliable performance in demanding conditions. Available in various mounting options such as front wall, rear wall, jam nut, and box mounts, they offer versatility for different applications. The connectors come in aluminum shells with plating options including cadmium and nickel, meeting RoHS compliance standards. Utilizing M39029 rear release crimp contacts, they provide secure and durable connections. Ideal for military and industrial use, these connectors guarantee high conductivity and ingress protection, making them suitable for a wide range of applications.