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, these connectors offer durability in extreme conditions. Available in various configurations including front and rear wall mount receptacles, as well as jam nut receptacles, they provide versatility for different applications. Utilizing M39029 rear release crimp contacts, these connectors ensure secure connections. Constructed with high strength aluminum shells and offering multiple plating options such as electroless nickel and cadmium finishes, they meet stringent military specifications. RoHS compliant options are also available, making them suitable for a wide range of industries.