The MIL-DTL-38999 Series I connectors offer high-performance connectivity in harsh environments, featuring up to 128 contacts housed in a rugged insert. Designed for durability, they are environmentally sealed and can operate in extreme temperatures ranging from -65°C to 200°C. Available in various shell sizes and insert arrangements, these connectors come in wall mount, jam nut, and RFI grounding plug configurations. Utilizing M39029 rear release crimp contacts, they ensure secure and reliable connections for critical applications. Constructed with high-strength aluminum shells and plated with options like electroless nickel and cadmium finishes, they meet stringent military specifications. With RoHS-certified cadmium-free variants available, these connectors are ideal for aerospace, defense, and industrial use.