MIL-DTL-38999 Series I connectors are designed for rugged environments, featuring up to 128 contacts in an insert. With a wide operating temperature range of -65 °C to 200 °C, they offer reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, these connectors come in high-strength aluminum shells with options for plating, including cadmium-free finishes. They feature front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs for added versatility. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Ideal for military and aerospace applications, these connectors provide durability and conductivity, with a mating life of 500 cycles.