Achieve reliable connectivity in harsh environments with MIL-DTL-38999 Series I connectors. Featuring up to 128 contacts within a durable insert, these circular receptacles are designed for back panel wall mounting with a secure bayonet coupling. Operating seamlessly in temperatures ranging from -65 °C to 200 °C, they ensure consistent performance in extreme conditions. The connectors, constructed with high-strength aluminum shells, offer versatility with 52 insert arrangements and M39029 rear release crimp contacts. With various plating options available, including gold and electroless nickel, they guarantee optimal conductivity. Certified for military specifications, these connectors are essential for applications demanding rugged and reliable electrical connections.