MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various styles including front and rear wall mount, jam nut, and box mount receptacles, these connectors offer versatility for different applications. With options for straight, RFI grounding, and 90-degree cable clamp plugs, they come in 9 shell sizes and 52 insert arrangements. Utilizing M39029 rear release crimp contacts, these connectors are reliable and durable. Constructed with aluminum shells and offered in various plating options such as cadmium and nickel, they meet stringent military specifications for performance in demanding conditions. Ideal for use in aerospace, defense, and other industries requiring rugged connectivity solutions.