The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range from -65 °C to 200 °C, they offer reliability in extreme conditions. Available in various shell sizes and insert arrangements, these connectors are versatile for different applications. Made of high-strength aluminum, they come with options for plating, including RoHS-certified finishes. The Series I connectors include front and rear wall mount, as well as jam nut receptacles, with RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Ideal for military and industrial use, these connectors meet stringent performance standards.