The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts within an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliability in extreme conditions. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, they provide flexibility for different applications. The connectors come in aluminum shells with a choice of plating options, including cadmium-free finishes, ensuring durability and compliance with RoHS regulations. With M39029 rear release crimp contacts, they guarantee secure connections and mating cycles. Ideal for military and aerospace applications, these connectors offer EMI/RFI shielding and high conductivity, meeting stringent performance requirements.