The MIL-DTL-38999 Series I connectors boast exceptional durability with up to 128 contacts housed in a rugged insert, offering reliable connectivity in harsh environments. These environmentally sealed connectors feature a wide operating temperature range from -65 °C to 200 °C, making them suitable for a variety of applications. 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 offering multiple plating options including cadmium-free finishes, these connectors are built to withstand demanding conditions. With options for front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they provide versatile solutions for military and industrial needs. Meeting MIL-DTL-38999 I standards, these connectors ensure high performance and reliability, with a service rating of I and a contact mating life of 500 cycles. Suitable for wall and jam nut mounting, they are designed for conductivity and environmental resistance, making them essential components for critical systems.