MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Offering various receptacle types including front and rear wall mount, jam nut, and box mount options, these connectors ensure secure and reliable connections. 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 and offering multiple plating options, these connectors meet stringent military specifications for quality and performance. With RoHS certified finishes available, they are ideal for applications requiring durability and reliability in demanding environments.