MIL-DTL-38999 Series I connectors are designed for rugged environments, with up to 128 contacts housed in a sealed insert. Operating smoothly in temperatures ranging from -65 °C to 200 °C, these connectors come in various shell sizes and insert arrangements, featuring front and rear wall mount options as well as jam nut receptacles. Using M39029 rear release crimp contacts, they ensure secure and reliable connections. Crafted from high-strength aluminum, the connectors offer different plating choices, including cadmium-free finishes. With a mating type of bayonet, these connectors are suited for military and industrial applications, meeting stringent environmental and performance standards.