MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts sealed within their inserts. Operating seamlessly in temperatures ranging from -65°C to 200°C, these connectors offer durability and reliability. With various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts, ensuring secure connections. Crafted from aluminum, they come with plating options like electroless nickel and iridescent yellow cadmium, meeting RoHS compliance standards. Perfect for military and industrial applications, these connectors guarantee optimal performance in demanding scenarios.