MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an insert that is environmentally sealed for reliable performance. With a wide operating temperature range of -65°C to 200°C, these connectors are suitable for demanding applications. Available in various configurations including front and rear wall mount, jam nut, and box mount receptacles, they feature bayonet coupling for easy and secure mating. The plugs come in straight, RFI grounding, and standard options with a 90-degree cable clamp, offering flexibility in installation. Constructed with aluminum shells and offering multiple plating options including electroless nickel, these connectors ensure durability and reliability. Utilizing M39029 rear release crimp contacts, they provide efficient connectivity with 9 shell sizes and 52 insert arrangements. Suitable for military and industrial use, the MIL-DTL-38999 Series II connectors meet stringent performance standards for conductivity and environmental protection, making them ideal for critical applications.