MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts, ideal for harsh environments. Featuring a wide operating temperature range from -65 °C to 200 °C, these environmentally sealed connectors ensure reliability in demanding conditions. Available in various configurations including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility for different applications. With 52 insert arrangements and M39029 rear release crimp contacts, these connectors provide secure and efficient connections. Constructed with durable aluminum shells and offered in different plating options, such as electroless nickel and cadmium finishes, they meet stringent military specifications. Suitable for use in aerospace, defense, and industrial settings, these connectors guarantee high conductivity and longevity, with RoHS compliant options available for environmentally conscious applications.