MIL-DTL-38999 Series I connectors offer reliable connectivity in harsh environments, featuring up to 128 contacts in an insert. These connectors are environmentally sealed and designed for durability, with an operating temperature range from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. The high-strength aluminum shells come with a choice of plating options, including cadmium-free finishes for RoHS compliance. With front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, these connectors meet stringent military specifications for performance and reliability.