MIL-DTL-38999 Series I connectors offer rugged durability for harsh environments, featuring up to 128 contacts in a sealed insert. With an operating temperature range from -65 °C to 200 °C, they provide reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, these connectors come in aluminum shells with plating options like iridescent yellow cadmium and electroless nickel. Meeting military specifications, they are perfect for applications requiring high strength and environmental resistance. The jam nut mounting, bayonet coupling design makes installation easy, while the included gold-plated removable crimp contacts ensure optimal conductivity. With a mating life of 500 cycles, these connectors are built to last in demanding environments.