MIL-DTL-38999 Series I connectors boast up to 128 contacts in a sealed insert, ideal for harsh environments with an operating range of -65 °C to 200 °C. Featuring various mounting options like front and rear wall mount, as well as jam nut receptacles, they offer versatility in installation. With 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for reliable connectivity. Constructed with high-strength aluminum shells, they come with multiple plating options, including cadmium-free finishes for RoHS compliance. Designed to endure rugged conditions, these connectors are essential for military and industrial applications.