The MIL-DTL-38999 Series II connectors are designed for harsh environments, with up to 128 contacts in an insert and environmental sealing. Operating between -65 °C and 200 °C, they offer reliable performance in extreme conditions. Available in various mounting styles, including front and rear wall mount, jam nut, and box mount receptacles, these connectors ensure versatility in installation. Featuring 52 insert arrangements and utilizing M39029 rear release crimp contacts, they provide flexibility in connectivity. With aluminum shells and plating options like cadmium and nickel, they offer durability and corrosion resistance. RoHS compliant finishes are also available. Suitable for military and industrial applications, these connectors guarantee secure and efficient electrical connections.