MIL-DTL-38999 Series I connectors feature up to 128 environmentally sealed contacts, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they offer front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs. Utilizing M39029 rear release crimp contacts, these connectors ensure secure connections in aerospace and military applications. The high-strength aluminum shells come in multiple plating options, including RoHS certified finishes, such as electroless nickel and cadmium-free coatings. Suitable for box mounting with bayonet coupling, these connectors provide reliable performance, with gold-plated removable crimp contacts offering conductivity and durability. Compliant with MIL-DTL-38999 standards, they are ideal for use in demanding environments that require rugged and reliable connectivity.