MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Offering various mounting options like front and rear wall mount, jam nut, and box mount receptacles, they ensure secure connectivity. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts for reliable performance. Constructed with aluminum shells and plating options including cadmium-free finishes, they meet stringent military specifications for durability. Perfect for applications requiring high reliability in demanding conditions.