MIL-DTL-38999 Series II connectors, with up to 128 contacts in an insert, are designed for harsh environments, featuring 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 various sizes. Constructed with aluminum shells and offered in a range of plating options, including RoHS certified finishes, these connectors ensure reliable performance in demanding conditions. With operating temperatures from -65°C to 200°C, they are ideal for a wide range of applications requiring durability and high performance.