MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting options including front and rear wall mount, and jam nut receptacles, these connectors offer RFI grounding plugs for secure connections. With 52 insert arrangements and M39029 rear release crimp contacts in multiple sizes, they ensure reliable performance. The high-strength aluminum shells come in a range of plating options, including cadmium-free finishes. RoHS certified and with a mating life of 500 cycles, these connectors are ideal for demanding applications.