MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With a wide operating temperature range of -65 °C to 200 °C, they offer reliable performance in extreme conditions. These connectors come in various configurations, including front wall mount, rear wall mount, jam nut, and box mount receptacles, with options for straight, RFI grounding, and standard plugs. Compliant with military specification MIL-DTL-38999 II, they are constructed with aluminum shells and offer multiple plating options, including cadmium-free finishes. Utilizing M39029 rear release crimp contacts, these connectors ensure secure connections with a mating life of 500 cycles. Suitable for applications requiring high conductivity and environmental resistance, they are ideal for military, aerospace, and industrial use.