MIL-DTL-38999 Series II connectors are designed for harsh environments, with up to 128 contacts housed in an environmentally sealed insert. Operating between -65°C and 200°C, these connectors offer reliability in extreme conditions. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they provide versatility for different applications. Available in 9 shell sizes and 52 insert arrangements, with M39029 rear release crimp contacts, these connectors ensure secure connections. Constructed with aluminum shells and offering plating options like electroless nickel, they are durable and corrosion-resistant. With a mating life of 500 cycles and conductive pins, they guarantee long-lasting performance. Suitable for military and industrial use, these connectors meet MIL-DTL-38999 II specifications, delivering high-quality connectivity solutions.