The MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts in an insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for harsh conditions. Available in various mounting styles such as front wall mount, rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. The connectors come in aluminum shells with options for plating including gold, electroless nickel, and cadmium finishes. With a focus on durability, they are RoHS compliant and provide reliable performance with 500 mating cycles. Suitable for military and industrial applications, these connectors ensure secure and efficient electrical connections in demanding situations.