MIL-DTL-38999 Series I connectors, designed for harsh environments, feature up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance in demanding conditions. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. The high-strength aluminum shells come with a choice of plating options, including cadmium-free finishes. Offering front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs, these connectors are ideal for military and industrial applications requiring durability and conductivity in challenging settings.