The MIL-DTL-38999 Series II connectors are designed for harsh environments, offering reliable performance with up to 128 contacts in an insert. With an operating temperature range from -65°C to 200°C, they are suitable for a wide range of applications. These connectors feature various mounting options, including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and plated with options such as electroless nickel, they provide durability and protection. With RoHS-certified finishes available, they meet environmental standards. Ideal for military and industrial use, these connectors ensure high conductivity and resistance to environmental factors.