The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range from -65 °C to 200 °C, these connectors offer durability and reliability in extreme conditions. Available in various configurations including front and rear wall mount, jam nut, and box mount receptacles, they provide versatile connectivity options. Utilizing M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12, these connectors ensure secure and efficient connections. The aluminum shells come with plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, catering to different application needs. RoHS certified cadmium-free finishes are also available, making them environmentally friendly. With a straight plug design, EMI/RFI shielding, and bayonet coupling, these connectors meet MIL-DTL-38999 II military specifications, offering high performance and quality for critical applications.