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. Offering front wall mount, rear wall mount, and jam nut receptacles, they ensure secure connections. Utilizing M39029 rear release crimp contacts in various sizes, including coax and twinax, these connectors come in 9 shell sizes and 52 insert arrangements. Constructed with high-strength aluminum shells, they are available in different plating options such as cadmium and nickel, meeting diverse industrial needs. With RoHS certified finishes, these connectors guarantee reliability and performance in demanding applications.