MIL-DTL-38999 Series I connectors offer durable and reliable connectivity in harsh environments. Featuring up to 128 contacts in an insert, these connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. With options for different plating finishes, including RoHS certified cadmium-free coatings, these connectors are versatile and meet military specification MIL-DTL-38999 I standards. Suitable for box mounting, they come in high-strength aluminum shells with options for front wall mount, rear wall mount, and jam nut receptacles. The bayonet coupling design ensures easy and secure mating, making them ideal for applications requiring rugged and dependable electrical connections.