MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65°C to 200°C. Available in various mounting options such as front wall, rear wall, and jam nut receptacles, they offer RFI grounding plugs for enhanced performance. With 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts for secure connections. Crafted from high-strength aluminum, they come with plating options including cadmium-free finishes for RoHS compliance. Perfect for demanding applications, these connectors ensure reliable conductivity with a contact mating life of 500 cycles.