MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts in an environmentally sealed insert. With an impressive operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance in extreme conditions. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they provide flexibility for diverse applications. The connectors come in 9 shell sizes and 52 insert arrangements, utilizing M39029 rear release crimp contacts. Constructed with aluminum shells and offering plating options such as cadmium and nickel, they ensure durability and corrosion resistance. RoHS compliant finishes are also available. These connectors, meeting MIL-DTL-38999 II specifications, are ideal for demanding military and industrial environments.