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 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-free finishes. The connector family includes front and rear wall mount, as well as jam nut receptacles, all meeting MIL-DTL-38999 I military specifications. Utilizing M39029 rear release crimp contacts, they ensure secure connections, with gold plating for excellent conductivity. Designed for durability, these connectors have a mating life of 500 cycles and are RoHS compliant, making them suitable for a wide range of applications where rugged and reliable connectivity is essential.