MIL-DTL-38999 Series II connectors offer high-performance connectivity in harsh environments, featuring up to 128 contacts within an environmentally sealed insert. Designed for durability, they operate reliably in temperatures ranging from -65 °C to 200 °C. Available in various mounting configurations such as front and rear wall mount, jam nut, and box mount receptacles, these connectors ensure versatile installation options. With a selection of shell sizes and insert arrangements, they accommodate different contact types, including the M39029 rear release crimp contacts. Crafted from aluminum with multiple plating options for corrosion resistance, these connectors meet stringent military specifications for reliability in demanding applications. The gold-plated contacts guarantee excellent conductivity, while the bayonet coupling mechanism ensures secure mating. With RoHS compliant options available, these connectors are ideal for aerospace, defense, and industrial applications where rugged performance is essential.