The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert with environmental sealing. Operating between -65 °C and 200 °C, they offer reliability in extreme conditions. Available in various mounting options like front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. With 52 insert arrangements and M39029 rear release crimp contacts, these connectors ensure secure connections. Constructed with aluminum shells and plated with options like electroless nickel and cadmium finishes, they guarantee durability. RoHS compliant and offering gold-plated contacts, they provide high conductivity and longevity. Perfect for military or industrial applications requiring rugged performance.