MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, they offer a wide operating temperature range from -65 °C to 200 °C. Available in various mounting options including front wall mount, rear wall mount, and jam nut receptacles, these connectors are ideal for military and aerospace applications. With 52 insert arrangements and M39029 rear release crimp contacts, they ensure secure and reliable connections. The high-strength aluminum shells come in different plating options, including cadmium-free finishes for RoHS compliance, making them suitable for diverse industrial needs.