The MIL-DTL-38999 Series II connectors offer high-performance connectivity for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With a wide operating temperature range of -65°C to 200°C, these connectors are designed for durability. Available in various mounting options such as front wall, rear wall, jam nut, and box mount receptacles, they ensure versatile installation. The connectors come in aluminum shells with multiple plating choices, including RoHS compliant finishes. Utilizing M39029 rear release crimp contacts, they guarantee secure connections. Ideal for military and industrial applications, these connectors provide reliable performance with their bayonet coupling and conductive socket contact style, meeting stringent service ratings and environmental resistance standards.