The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With a wide operating temperature range from -65°C to 200°C, they offer reliable performance in extreme conditions. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, these connectors meet the stringent requirements of military specification MIL-DTL-38999 II. Constructed with aluminum shells and offering multiple plating options including electroless nickel and cadmium finishes, they ensure durability and corrosion resistance. Utilizing M39029 rear release crimp contacts, these connectors provide secure and efficient connectivity. RoHS compliant options are also available, making them environmentally friendly choices for critical applications.