MIL-DTL-38999 Series I connectors offer high-performance connectivity in harsh environments, featuring up to 128 contacts within a sealed insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are reliable in extreme conditions. Available in various shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts for secure connections. Constructed with high strength aluminum shells and offering multiple plating options, including RoHS compliant finishes, these connectors ensure durability and performance. The MIL-DTL-38999 I family includes front and rear wall mount receptacles, as well as jam nut receptacles, all designed for RFI grounding. With a mating style of bayonet coupling and contact plating in gold, they provide efficient electrical connectivity for diverse applications. The connectors, with their C keyway polarization and environment-resistant design, are ideal for military and industrial use, meeting stringent standards for reliability and performance.