MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert with environmental sealing. Operating between -65 °C and 200 °C, these connectors come in various shell sizes and insert arrangements, accommodating M39029 rear release crimp contacts. Available in aluminum shells with plating options like cadmium and nickel, they ensure durability and reliability. With options for front and rear wall mount, as well as jam nut receptacles, these connectors meet military specifications for rugged performance. Suitable for applications requiring high strength and conductivity, they offer RoHS certified finishes for compliance with environmental standards.