The MIL-DTL-38999 Series II connectors feature up to 128 contacts enclosed in a durable insert, offering reliable performance in harsh environments. With a wide operating temperature range from -65°C to 200°C, these connectors are suitable for use in extreme conditions. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they provide flexibility for different applications. The connectors come in nine shell sizes and 52 insert arrangements, utilizing M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Constructed with aluminum shells and offering multiple plating options such as cadmium and nickel, they ensure corrosion resistance. These connectors, compliant with military specifications, are ideal for aerospace, defense, and industrial applications requiring rugged and reliable connectivity.