MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. With operating temperatures ranging from -65 °C to 200 °C, they ensure reliable functionality in extreme conditions. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Crafted from high-strength aluminum, these connectors come in various plating options, including cadmium-free finishes. Ideal for military and industrial applications, they meet stringent MIL-DTL-38999 I specifications for durability and performance.