The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert for reliable electrical connections. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various mounting styles, including front and rear wall mount, jam nut, and box mount receptacles, they offer flexibility for installation. Constructed with aluminum shells and offering multiple plating options, such as cadmium and nickel, these connectors ensure durability and performance. Utilizing M39029 rear release crimp contacts, they provide secure connections in sizes 22D, 22M, 22, 20, 16, and 12. Meeting MIL-DTL-38999 II military specifications, these connectors are suitable for use in aerospace, defense, and other rugged environments where reliable connectivity is essential.