The MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts in a durable insert. Designed for harsh environments, these connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they provide versatile installation possibilities. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering multiple plating options, including RoHS-compliant finishes, they ensure reliable performance in demanding applications. Suitable for military and industrial use, these connectors meet MIL-DTL-38999 II specifications, guaranteeing quality and durability.