MIL-DTL-38999 Series II connectors offer durable connectivity in harsh environments, featuring up to 128 contacts within a sealed insert. With a wide operating temperature range from -65 °C to 200 °C, these connectors are reliable in extreme conditions. Available in various mounting options like front wall, rear wall, jam nut, and box mount receptacles, they cater to diverse installation needs. The connectors, crafted from aluminum, come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts. Plating choices include cadmium-free finishes like electroless nickel and olive drab cadmium, meeting RoHS certification standards. Designed for military specification MIL-DTL-38999 II, these connectors ensure high performance and longevity in demanding applications.