MIL-DTL-38999 Series I connectors feature up to 128 contacts enclosed in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various configurations including front wall mount, rear wall mount, and jam nut receptacles, these connectors ensure secure connections in demanding applications. With 52 insert arrangements and M39029 rear release crimp contacts, they offer versatility and reliability. Constructed with high-strength aluminum shells and offered in multiple plating options, including RoHS-certified finishes, they meet rigorous military specifications. Ideal for use in aerospace, defense, and industrial sectors, these connectors provide durable and efficient electrical connectivity.