The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With a wide operating temperature range of -65 °C to 200 °C, these environmentally sealed connectors are ideal for demanding applications. Available in various mounting styles such as front wall mount, rear wall mount, jam nut, and more, they offer versatility in installation. Constructed with aluminum shells and offering multiple plating options including gold, electroless nickel, and cadmium finishes, these connectors ensure reliable conductivity. Mating through bayonet coupling, they provide secure connections with a mating life of 500 cycles. These connectors, compliant with MIL-DTL-38999 II specifications, guarantee performance in rugged conditions.