The MIL-DTL-38999 Series I connectors offer high-performance connectivity for harsh environments, featuring up to 128 contacts within an environmentally sealed insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are designed for durability. Available in various shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts in multiple sizes. Constructed with high-strength aluminum shells and offering a choice of plating options, including RoHS-certified finishes, these connectors ensure reliability in demanding applications. The family includes front and rear wall mount receptacles, jam nut receptacles, and RFI grounding plugs, all with bayonet coupling. Ideal for military and aerospace applications, these connectors provide secure and efficient electrical connections in critical environments.