MIL-DTL-38999 Series II connectors are designed for harsh environments, with up to 128 contacts in an insert. These connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Featuring various mounting options such as front wall, rear wall, and jam nut, they offer versatility in installation. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for reliable connections. Constructed with aluminum shells and offered in different plating options including cadmium and nickel, these connectors ensure durability. With RoHS compliant finishes available, they meet environmental standards. Ideal for military and industrial applications, these connectors provide secure and efficient electrical connections in demanding conditions.