MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments. With an operating temperature range from -65 °C to 200 °C, they offer reliability in extreme conditions. Available in various shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts. These connectors, with front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs, ensure versatile installation. Constructed with high-strength aluminum shells and a choice of plating options, including cadmium-free finishes, they meet stringent military specifications. Suitable for applications requiring durability and performance, these connectors are ideal for use in aerospace, defense, and industrial settings.