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. These connectors come in various configurations, including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Constructed with aluminum shells, they offer plating options such as cadmium, electroless nickel, and black anodized finishes. The straight plugs, featuring EMI/RFI shielding, come with a 90-degree cable clamp and gold contact plating for reliable performance. Meeting MIL-DTL-38999 II specifications, these connectors ensure durability and conductivity in demanding military and industrial applications.