MIL-DTL-38999 Series I connectors feature up to 128 environmentally sealed contacts, designed for harsh environments with an operating temperature range of -65°C to 200°C. Available in various mounting options including front wall, rear wall, and jam nut receptacles, they ensure secure connections. With 52 insert arrangements and M39029 rear release crimp contacts, these connectors offer flexibility and reliability. The high-strength aluminum shells come with a choice of plating options, including cadmium-free finishes for RoHS compliance. Ideal for military and aerospace applications, these connectors guarantee longevity with a contact mating life of 500 cycles.