The MIL-DTL-38999 Series II connectors offer reliable performance in harsh environments, featuring up to 128 contacts and a wide operating temperature range from -65 °C to 200 °C. These connectors come in various configurations including front and rear wall mounts, jam nuts, and box mounts, with options for straight, RFI grounding, and 90-degree cable clamp plugs. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering plating options like gold, electroless nickel, and anodized aluminum, these connectors meet stringent military specifications for durability and performance. With RoHS certified finishes available, they are suitable for a wide range of applications requiring rugged and reliable connectivity in demanding environments.