MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an insert. These environmentally sealed connectors feature a wide operating temperature range from -65°C to 200°C. Available in various configurations including front and rear wall mount, jam nut, and box mount receptacles, they ensure reliable connectivity in demanding applications. With options for straight, RFI grounding, and standard plugs, along with multiple shell sizes and insert arrangements, they provide versatility for different installation requirements. Constructed with aluminum shells and offering various plating options, including RoHS certified finishes, these connectors are durable and compliant with industry standards. Suitable for military, aerospace, and industrial use, they guarantee high performance and longevity, with a service rating of E and contact gender of female.