MIL-DTL-38999 Series I connectors offer high-performance solutions for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range from -65 °C to 200 °C, these connectors are reliable in extreme conditions. Available in various shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts for secure connections. The connector family includes front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. Crafted from high-strength aluminum with plating options such as electroless nickel and cadmium finishes, they ensure durability and conductivity. Suitable for military and industrial applications, these connectors meet MIL-DTL-38999 I specifications, providing reliable performance in demanding environments.