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. With options for different shell sizes and insert arrangements, these connectors are constructed with high-strength aluminum shells and offer plating choices such as gold, electroless nickel, and anodized aluminum. Meeting military specification MIL-DTL-38999 I, they are ideal for demanding applications requiring reliability and durability.