The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With front and rear wall mount options, as well as jam nut and box mount receptacles, they offer versatile connectivity solutions. These connectors, compliant with military specification MIL-DTL-38999 II, are environmentally sealed and suitable for use in temperatures ranging from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they use M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering plating options such as cadmium and nickel, they ensure durability and reliability. Ideal for applications requiring high performance in challenging conditions, these connectors are essential components in military, aerospace, and industrial systems.