MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors 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 versatility in installation. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for secure connections. Constructed with durable aluminum shells and plated with options such as gold and electroless nickel, they ensure reliable performance. With RoHS certified finishes available, these connectors meet stringent environmental standards. Ideal for military and industrial applications, the MIL-DTL-38999 Series II connectors guarantee connectivity in demanding conditions.