The MIL-DTL-38999 Series I connectors boast exceptional durability and reliability, with up to 128 contacts housed within a robust insert. Designed for harsh environments, these connectors are environmentally sealed and can operate in temperatures ranging from -65°C to 200°C. Available in various mounting options including front wall, rear wall, and jam nut receptacles, they feature RFI grounding plugs for added performance. With 52 insert arrangements and M39029 rear release crimp contacts, they offer versatile connectivity solutions. Constructed with high strength aluminum shells and plated in a choice of finishes including electroless nickel and cadmium, these connectors ensure secure and efficient connections. RoHS certified options are also available, making them suitable for diverse applications requiring reliable performance in challenging conditions.