MIL-DTL-38999 Series I connectors offer high-performance connectivity in harsh environments, featuring up to 128 contacts housed in an environmentally sealed insert. With an impressive operating temperature range of -65 °C to 200 °C, these connectors are designed for durability. Available in various mounting options including front wall, rear wall, and jam nut receptacles, they ensure secure installations. The connectors comply with military specification MIL-DTL-38999 I and come in 9 shell sizes and 52 insert arrangements, facilitating versatile applications. Utilizing M39029 rear release crimp contacts, they guarantee reliable connections. Constructed with high-strength aluminum shells and offering multiple plating options such as electroless nickel, these connectors prioritize robustness and corrosion resistance. Suitable for demanding environments, they are ideal for aerospace, defense, and industrial applications.