MIL-DTL-38999 Series I connectors are high-performance solutions for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors ensure reliability in extreme conditions. Available in various shell sizes and insert arrangements, they offer flexibility for different applications. Made of high-strength aluminum, they come in a range of plating options, including cadmium-free finishes for RoHS compliance. The Series I connectors, with options for front and rear wall mount as well as jam nut receptacles, are ideal for military and aerospace applications requiring rugged and dependable connectivity.