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, these connectors offer reliability in extreme conditions. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they provide versatility for different applications. Utilizing M39029 rear release crimp contacts, these connectors ensure secure connections. Constructed with aluminum shells and offering plating options such as electroless nickel and cadmium finishes, they meet stringent military specifications. With a mating type of bayonet coupling and contact plating in gold, these connectors guarantee optimal performance and durability.