MIL-DTL-38999 Series I connectors are designed to withstand harsh environments with up to 128 contacts housed in an insert. Featuring front wall mount, rear wall mount, and jam nut receptacles, they offer RFI grounding plugs for enhanced performance. With a wide operating temperature range from -65 °C to 200 °C, these connectors are suitable for diverse applications. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in various sizes. Constructed with high-strength aluminum shells, the connectors come in different plating options, including cadmium-free finishes for RoHS compliance. Perfect for military and industrial use, they ensure reliable conductivity with a contact mating life of 500 cycles.