The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert with environmental sealing. Operating between -65 °C and 200 °C, they offer durability in extreme conditions. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount, these connectors ensure versatility in applications. With options for straight, RFI grounding, and standard plugs, as well as a range of shell sizes and insert arrangements, they provide flexibility for different connectivity needs. Constructed with aluminum shells and offering plating options like electroless nickel and cadmium finishes, these connectors guarantee reliable performance. Compliant with RoHS standards, they are ideal for military and industrial applications requiring rugged and efficient electrical connections.