The MIL-DTL-38999 Series I connectors boast exceptional versatility with up to 128 contacts housed within their inserts. Engineered for harsh environments, these connectors guarantee reliable performance in a wide temperature range from -65°C to 200°C. Featuring front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs, they cater to diverse installation needs. With 9 shell sizes and 52 insert arrangements available, these connectors accommodate various configurations, utilizing M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. Crafted from high-strength aluminum, these connectors are not only robust but also offer a range of plating options, including cadmium-free finishes for RoHS compliance. With a mating life of 500 cycles and a conductivity rating of conductive, they ensure long-lasting and efficient electrical connections, making them ideal for demanding applications.