The MIL-DTL-38999 Series I connectors offer high-performance connectivity in harsh environments, featuring up to 128 contacts sealed for environmental protection. Designed for durability, these connectors operate reliably in temperatures ranging from -65 °C to 200 °C. With a variety of shell sizes and insert arrangements, they accommodate diverse applications, utilizing M39029 rear release crimp contacts. Available in aluminum shells with multiple plating options, including RoHS-certified finishes, these connectors ensure optimal conductivity and longevity. The Series I family includes wall mount, jam nut receptacles, and RFI grounding plugs, meeting stringent military specifications for reliability in demanding settings.