The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With a wide operating temperature range of -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 options for plating including cadmium and nickel. They meet stringent military specifications for durability and are ideal for aerospace, defense, and industrial applications requiring rugged connectivity. With front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs, they provide versatility in installation. The use of M39029 rear release crimp contacts ensures secure connections, while RoHS compliant cadmium-free finishes are available for environmental responsibility. Suitable for both commercial and military use, MIL-DTL-38999 Series I connectors are a reliable choice for demanding connectivity needs.