MIL-DTL-38999 Series I connectors offer reliable connectivity in harsh environments, featuring up to 128 contacts in an insert. With a wide operating temperature range of -65 °C to 200 °C, these environmentally sealed connectors are ideal for demanding applications. Available in various shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. Constructed with high-strength aluminum shells and offering multiple plating options including cadmium-free finishes, these connectors ensure durability and performance. They come in different styles such as front wall mount, rear wall mount, and jam nut receptacles, with RFI grounding plugs also available. MIL-DTL-38999 Series I connectors meet stringent military specifications, making them suitable for mission-critical systems requiring secure and efficient electrical connections.