MIL-DTL-38999 Series I connectors feature up to 128 contacts enclosed in a sealed insert, designed for harsh environments with an operating range from -65 °C to 200 °C. Available in various mounting options, including front wall mount, rear wall mount, and jam nut receptacles, they ensure secure connections in military and industrial applications. These connectors come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts for reliable connectivity. Crafted from high-strength aluminum, they offer durability and come with a range of plating options, including cadmium-free finishes for RoHS compliance. Suitable for use in demanding environments, these connectors guarantee performance and longevity in critical systems.