MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With operating temperatures ranging from -65 °C to 200 °C, they offer reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, these connectors come in high-strength aluminum shells with a choice of plating options, including cadmium-free finishes. The connector family includes front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs, ensuring versatility in installation. Utilizing M39029 rear release crimp contacts, these connectors guarantee secure connections, with contact plating in gold for optimal conductivity. Meeting military specifications for durability, they are ideal for a wide range of applications in aerospace, defense, and industrial sectors.