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 configurations including front wall mount, rear wall mount, jam nut, rear box mount, and front box mount receptacles, they offer versatility for different applications. With options for straight, RFI grounding, and standard plugs, these connectors come in 9 shell sizes and 52 insert arrangements, utilizing M39029 rear release crimp contacts. Constructed with aluminum shells and offering multiple plating options such as cadmium and nickel, they ensure durability and reliability. These connectors, compliant with MIL-DTL-38999 II specifications, are ideal for military, aerospace, and other demanding industries requiring secure and high-performance electrical connections.