The MIL-DTL-38999 Series I connectors are designed for harsh environments, offering up to 128 contacts in an environmentally sealed insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are suitable for demanding applications. Available in various shell sizes and insert arrangements, they feature front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. Constructed with high-strength aluminum shells, they come in a range of plating options including cadmium-free finishes. Utilizing M39029 rear release crimp contacts, these connectors ensure reliable performance, with gold contact plating for enhanced conductivity. Meeting MIL-DTL-38999 I military specifications, they are ideal for use in aerospace, defense, and other critical industries.