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 of -65 °C to 200 °C. Available in various configurations including front wall mount, rear wall mount, and jam nut receptacles, they offer RFI grounding plugs and utilize M39029 rear release crimp contacts. Constructed with high-strength aluminum shells and offered in different plating options such as electroless nickel and cadmium finishes, these connectors ensure reliable performance in demanding applications. Meeting military specification MIL-DTL-38999 I, they are ideal for use in environments requiring rugged, durable connectivity solutions.