MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These connectors are environmentally sealed, with an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they come in aluminum shells with options for plating, including cadmium-free finishes. Offering front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, these connectors ensure reliable performance in demanding applications. Utilizing M39029 rear release crimp contacts, they are suitable for military and aerospace use, meeting stringent MIL-DTL-38999 I specifications.