MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts within an insert. These connectors are environmentally sealed, with an operating temperature range of -65°C to 200°C. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility for different applications. With options for straight, RFI grounding, and standard plugs, in 9 shell sizes and 52 insert arrangements, they provide flexibility in design. Utilizing M39029 rear release crimp contacts, these connectors ensure secure connections. Made of durable aluminum, with plating options including cadmium and nickel finishes, they meet stringent military specifications. Suitable for demanding environments, these connectors guarantee reliable performance.