The MIL-DTL-38999 Series II connectors offer robust connectivity solutions in harsh environments, with up to 128 contacts housed in a sealed insert. Designed for durability, they can withstand temperatures ranging from -65°C to 200°C. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, these connectors are versatile for different applications. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and plated with options like electroless nickel and cadmium finishes, they ensure reliable performance. Compliant with military specification MIL-DTL-38999 II, these connectors are ideal for demanding environments requiring rugged and reliable electrical connections.