MIL-DTL-38999 Series I connectors, designed for harsh environments, feature up to 128 contacts in an insert with front wall mount, rear wall mount, and jam nut receptacles. Operating at temperatures ranging from -65°C to 200°C, these connectors offer reliable performance. Utilizing M39029 rear release crimp contacts in various sizes, including coax and twinax, they ensure secure connections. With 9 shell sizes and 52 insert arrangements, they cater to diverse application needs. Constructed with high-strength aluminum shells and available in different plating options such as electroless nickel and cadmium finishes, they guarantee durability. Meeting RoHS compliance standards, these connectors are ideal for demanding military and industrial settings.