MIL-DTL-38999 Series I connectors are designed for harsh environments, offering up to 128 contacts in a secure insert. With a wide operating temperature range of -65 °C to 200 °C, they provide reliable performance in extreme conditions. Featuring front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, these connectors are versatile. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in various sizes. Constructed with high-strength aluminum shells, they come with plating options like gold, electroless nickel, and anodized aluminum. RoHS certified finishes are also available, ensuring compliance with environmental regulations. Perfect for military and industrial applications, these connectors guarantee durability and conductivity, with a mating life of 500 cycles.