The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, they offer reliable performance in extreme conditions. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, these connectors provide versatility for different applications. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Constructed with aluminum shells and offered in a range of plating options, including RoHS certified finishes, they meet stringent military specifications. Trusted for their durability and performance, these connectors are ideal for demanding aerospace, defense, and industrial applications.