The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With environmental sealing and a wide operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance in demanding conditions. Available in various configurations including front and rear wall mounts, jam nuts, and more, they provide flexibility for different applications. The connectors come in aluminum shells with options for plating such as gold and electroless nickel, meeting stringent military specifications. Suitable for military, aerospace, and industrial use, these connectors ensure secure and durable electrical connections.