The MIL-DTL-38999 Series I connectors boast up to 128 contacts housed within a rugged insert, ensuring reliable performance in harsh environments. Featuring front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs, these connectors offer versatility in application. With nine shell sizes and 52 insert arrangements available, they accommodate a wide range of needs. Utilizing M39029 rear release crimp contacts, these connectors guarantee secure connections. Crafted from high-strength aluminum, they are built to last. Plating options include light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, catering to various specifications. RoHS certified cadmium-free finishes are also offered, aligning with environmental standards. With an operating temperature range from -65 °C to 200 °C, these connectors are designed for optimal performance in demanding conditions.