MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, these connectors come in aluminum shells with options for plating including cadmium and nickel. The connectors offer front and rear wall mount, jam nut receptacles, and RFI grounding plugs, utilizing M39029 rear release crimp contacts. With a durable construction and RoHS-certified finish options, they ensure reliable performance in demanding applications.