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. These connectors, available in various shell sizes and insert arrangements, come in front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they ensure secure connections in sizes 22D, 22M, 22, 20, 16, and 8 (coax and twinax). Constructed with high-strength aluminum shells and offered in different plating options such as cadmium and nickel, they meet stringent military specifications for reliability. With RoHS-compliant finishes available, these connectors guarantee performance in demanding applications.