MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert that is environmentally sealed. With an operating temperature range from -65 °C to 200 °C, these connectors offer reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Constructed with high strength aluminum shells and offered with different plating options, including cadmium-free finishes, these connectors meet military specifications for durability and performance. Suitable for applications requiring rugged and reliable electrical connections, the MIL-DTL-38999 Series I connectors are ideal for use in aerospace, defense, and other demanding industries.